Climate Change in Lajas, Puerto Rico

74+ years of recorded temperature data show Lajas is warming.

Based on our analysis of 74 years of temperature data near Lajas, PR, this area shows a warming trend of approximately +0.3°F per decade. 9 of the last 10 years recorded above-average temperatures, and 2016 was the warmest year on record at +2.6°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.3°F

per decade

Warmest Year

2016

+2.6°F anomaly

Recent Warm Years

9 / 10

above-average years

Decade Shift

+1.4°F

2020s vs 1950s

Compared to the National Average

Lajas is warming at roughly the national average rate.

National: +0.20°F/decade
Lajas: +0.25°F/decade

Climate Spiral

Each ring represents one year of monthly temperatures. Blue indicates cooler-than-average periods; red indicates warmer. The outward drift over time reveals Lajas's long-term warming trend.

Temperature anomaly spiral for Lajas, Puerto Rico
Climate spiral: monthly temperature anomalies from 74+ years of NOAA records for Lajas, PR.

Warming Stripes

Each vertical stripe represents one year. The color gradient from blue to red shows how annual temperatures have shifted relative to the historical average.

Warming stripes for Lajas, Puerto Rico
Warming stripes: each stripe is one year of average temperature anomaly for Lajas, PR.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.25°F per decade quantifies the rate of change.

Temperature trend chart for Lajas, Puerto Rico
Linear trend: annual temperature anomalies with trend line for Lajas, PR.

Temperature by Decade

1950s
-0.64°F
1960s
+0.04°F
1970s
-0.22°F
1980s
+0.58°F
1990s
-0.43°F
2000s
+0.82°F
2010s
+1.30°F
2020s
+0.77°F

Average temperature anomaly per decade relative to the historical baseline period.

Anomaly Scale

-2.3°F Colder Normal +2.5°F Warmer

Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout.

Monthly Temperature Records

Complete monthly temperature record for Lajas, PR. Filter by decade or download as CSV.

Data Sources & Audit

Station
LAJAS SUBSTATION, PR US
Distance
3.6 mi
Coverage
87%
Records
773
Range
1950-01 – 2023-12
Gap-filled
111 from 7 stations
Full Data Audit 884 records
YearMonthTempBaselineAnomalySourceGap
1950Jan70.5°F73.3°F-2.8°RQC00668757
1950Feb71.2°F73.8°F-2.6°RQC00668757
1950Mar71.7°F74.7°F-3.0°RQC00668757
1950Apr70.8°F76.4°F-5.7°RQC00668757
1950May75.1°F78.7°F-3.6°RQC00666073
1950Jun78.5°F80.1°F-1.6°RQC00666073
1950Jul78.7°F80.2°F-1.5°RQC00668757
1950Aug79.1°F80.0°F-0.8°RQC00668757
1950Sep79.1°F79.4°F-0.3°RQC00668757
1950Oct78.1°F78.6°F-0.5°RQC00668757
1950Nov75.0°F77.1°F-2.1°RQC00665097
1950Dec71.9°F74.5°F-2.6°RQC00665097
1951Jan72.6°F73.3°F-0.7°RQC00668757
1951Feb71.8°F73.8°F-2.0°RQC00668757
1951Mar69.8°F74.7°F-4.8°RQC00665097
1951Apr76.8°F76.4°F+0.4°RQC00665097
1951May78.4°F78.7°F-0.3°RQC00665097
1951Jun79.1°F80.1°F-1.0°RQC00665097
1951Jul79.3°F80.2°F-0.9°RQC00665097
1951Aug79.1°F80.0°F-0.8°RQC00665097
1951Sep78.2°F79.4°F-1.2°RQC00665097
1952Jan71.3°F73.3°F-1.9°RQC00665097
1952Feb73.5°F73.8°F-0.4°RQC00665097
1952Mar74.0°F74.7°F-0.7°RQC00665097
1952Apr77.8°F76.4°F+1.4°RQC00665097
1952May79.7°F78.7°F+1.0°RQC00665097
1952Jun81.4°F80.1°F+1.3°RQC00665097
1952Jul80.1°F80.2°F-0.1°RQC00665097
1952Aug79.9°F80.0°F-0.1°RQC00665097
1952Sep78.4°F79.4°F-1.1°RQC00665097
1952Oct77.9°F78.6°F-0.7°RQC00665097
1952Nov75.6°F77.1°F-1.5°RQC00665097
1952Dec72.1°F74.5°F-2.4°RQC00665097
1953Jan72.3°F73.3°F-1.0°RQC00665097
1953Feb71.3°F73.8°F-2.6°RQC00665097
1953Mar72.7°F74.7°F-1.9°RQC00665097
1953Apr75.0°F76.4°F-1.4°RQC00665097
1953May78.2°F78.7°F-0.5°RQC00665097
1953Jun78.6°F80.1°F-1.5°RQC00665097
1953Jul78.3°F80.2°F-1.9°RQC00665097
1953Aug78.2°F80.0°F-1.8°RQC00665097
1953Sep78.5°F79.4°F-1.0°RQC00665097
1953Oct76.5°F78.6°F-2.1°RQC00665097
1953Nov75.7°F77.1°F-1.4°RQC00665097
1953Dec73.9°F74.5°F-0.6°RQC00665097
1954Jan74.3°F73.3°F+1.1°RQC00665097
1954Feb73.2°F73.8°F-0.6°RQC00665097
1954Mar74.0°F74.7°F-0.6°RQC00665097
1954Apr75.3°F76.4°F-1.2°RQC00665097
1954May78.5°F78.7°F-0.2°RQC00665097
1954Jun80.1°F80.1°F+0.0°RQC00665097
1954Jul80.3°F80.2°F+0.1°RQC00665097
1954Aug80.5°F80.0°F+0.6°RQC00665097
1954Sep78.4°F79.4°F-1.1°RQC00665097
1954Oct77.6°F78.6°F-0.9°RQC00665097
1954Nov75.9°F77.1°F-1.2°RQC00665097
1954Dec73.9°F74.5°F-0.6°RQC00665097
1955Jan73.3°F73.3°F+0.0°RQC00665097
1955Feb73.6°F73.8°F-0.2°RQC00665097
1955Mar72.3°F74.7°F-2.4°RQC00665097
1955Apr75.0°F76.4°F-1.5°RQC00665097
1955May79.1°F78.7°F+0.4°RQC00665097
1955Jun78.9°F80.1°F-1.2°RQC00665097
1955Jul80.4°F80.2°F+0.2°RQC00665097
1955Aug79.9°F80.0°F-0.1°RQC00665097
1955Sep79.3°F79.4°F-0.2°RQC00665097
1955Oct78.6°F78.6°F+0.0°RQC00665097
1955Nov76.3°F77.1°F-0.8°RQC00665097
1955Dec74.1°F74.5°F-0.4°RQC00665097
1956Jan71.8°F73.3°F-1.5°RQC00665097
1956Feb71.1°F73.8°F-2.7°RQC00665097
1956Mar72.9°F74.7°F-1.8°RQC00665097
1956Apr75.6°F76.4°F-0.9°RQC00665097
1956May76.3°F78.7°F-2.4°RQC00665097
1956Jun77.2°F80.1°F-2.9°RQC00665097
1956Jul76.9°F80.2°F-3.3°RQC00665097
1956Aug77.4°F80.0°F-2.6°RQC00665097
1956Sep77.9°F79.4°F-1.5°RQC00665097
1956Oct76.0°F78.6°F-2.5°RQC00665097
1956Nov74.7°F77.1°F-2.4°RQC00665097
1956Dec74.0°F74.5°F-0.5°RQC00665097
1957Jan72.8°F73.3°F-0.4°RQC00665097
1957Feb74.2°F73.8°F+0.3°RQC00665097
1957Mar74.8°F74.7°F+0.1°RQC00665097
1957Apr76.3°F76.4°F-0.1°RQC00665097
1957May78.5°F78.7°F-0.2°RQC00665097
1957Jun81.1°F80.1°F+1.0°RQC00665097
1957Jul82.1°F80.2°F+1.9°RQC00665097
1957Aug81.5°F80.0°F+1.5°RQC00665097
1957Sep80.1°F79.4°F+0.6°RQC00665097
1957Oct78.5°F78.6°F+0.0°RQC00665097
1957Nov77.5°F77.1°F+0.4°RQC00665097
1957Dec76.0°F74.5°F+1.5°RQC00665097
1958Jan74.6°F73.3°F+1.3°RQC00665097
1958Feb74.6°F73.8°F+0.7°RQC00665097
1958Mar76.7°F74.7°F+2.0°RQC00665097
1958Apr79.1°F76.4°F+2.6°RQC00665097
1958May80.4°F78.7°F+1.7°RQC00665097
1958Jun80.4°F80.1°F+0.3°RQC00665097
1958Jul79.5°F80.2°F-0.7°RQC00665097
1958Aug79.7°F80.0°F-0.3°RQC00665097
1958Sep79.8°F79.4°F+0.3°RQC00665097
1958Oct79.6°F78.6°F+1.0°RQC00665097
1958Nov77.4°F77.1°F+0.4°RQC00665097
1958Dec75.4°F74.5°F+0.9°RQC00665097
1959Jan74.5°F73.3°F+1.3°RQC00665097
1959Feb73.9°F73.8°F+0.1°RQC00665097
1959Mar75.9°F74.7°F+1.3°RQC00665097
1959Apr77.7°F76.4°F+1.2°RQC00665097
1959May77.3°F78.7°F-1.4°RQC00665097
1959Jun79.8°F80.1°F-0.3°RQC00665097
1959Jul79.9°F80.2°F-0.3°RQC00665097
1959Aug79.3°F80.0°F-0.7°RQC00665097
1959Sep80.5°F79.4°F+1.1°RQC00665097
1959Oct79.2°F78.6°F+0.6°RQC00665097
1959Nov77.9°F77.1°F+0.8°RQC00665097
1959Dec76.3°F74.5°F+1.8°RQC00665097
1960Jan74.5°F73.3°F+1.3°RQC00665097
1960Feb75.4°F73.8°F+1.5°RQC00665097
1960Mar76.0°F74.7°F+1.3°RQC00665097
1960Apr76.4°F76.4°F+0.0°RQC00665097
1960May79.3°F78.7°F+0.6°RQC00665097
1960Jun80.3°F80.1°F+0.2°RQC00665097
1960Jul80.3°F80.2°F+0.1°RQC00665097
1960Aug79.7°F80.0°F-0.3°RQC00665097
1960Sep79.1°F79.4°F-0.4°RQC00665097
1960Oct79.4°F78.6°F+0.8°RQC00665097
1960Nov78.2°F77.1°F+1.1°RQC00665097
1960Dec74.4°F74.5°F-0.1°RQC00665097
1961Jan74.1°F73.3°F+0.8°RQC00665097
1961Feb73.8°F73.8°F+0.0°RQC00665097
1961Mar74.9°F74.7°F+0.2°RQC00665097
1961Apr77.5°F76.4°F+1.0°RQC00665097
1961May79.0°F78.7°F+0.3°RQC00665097
1961Jun79.6°F80.1°F-0.5°RQC00665097
1961Jul78.4°F80.2°F-1.8°RQC00665097
1961Aug78.9°F80.0°F-1.1°RQC00665097
1961Sep78.8°F79.4°F-0.6°RQC00665097
1961Oct78.2°F78.6°F-0.3°RQC00665097
1961Nov76.1°F77.1°F-1.0°RQC00665097
1961Dec74.9°F74.5°F+0.4°RQC00665097
1962Jan75.9°F73.3°F+2.6°RQC00665693
1962Feb75.0°F73.8°F+1.2°RQC00665693
1962Mar76.2°F74.7°F+1.6°RQC00665693
1962Apr77.9°F76.4°F+1.4°RQC00665693
1962May79.7°F78.7°F+1.0°RQC00665693
1962Jun80.8°F80.1°F+0.7°RQC00665693
1962Jul81.6°F80.2°F+1.4°RQC00665693
1962Aug81.1°F80.0°F+1.1°RQC00665693
1962Sep81.3°F79.4°F+1.9°RQC00665693
1962Oct80.0°F78.6°F+1.4°RQC00665693
1962Nov78.5°F77.1°F+1.4°RQC00665693
1962Dec77.0°F74.5°F+2.5°RQC00665693
1963Jan74.1°F73.3°F+0.8°RQC00665097
1963Feb74.6°F73.8°F+0.8°RQC00665097
1963Mar75.7°F74.7°F+1.0°RQC00665097
1963Apr77.0°F76.4°F+0.5°RQC00665097
1963May77.6°F78.7°F-1.1°RQC00665097
1963Jun79.6°F80.1°F-0.6°RQC00665097
1963Jul79.6°F80.2°F-0.6°RQC00665097
1963Aug78.6°F80.0°F-1.4°RQC00665097
1963Sep80.0°F79.4°F+0.5°RQC00665097
1963Oct79.4°F78.6°F+0.9°RQC00665097
1963Nov76.9°F77.1°F-0.2°RQC00665097
1963Dec75.5°F74.5°F+1.0°RQC00665097
1964Jan73.5°F73.3°F+0.2°RQC00665097
1964Feb74.8°F73.8°F+0.9°RQC00665097
1964Mar74.2°F74.7°F-0.4°RQC00665097
1964Apr74.8°F76.4°F-1.7°RQC00665097
1964May78.0°F78.7°F-0.8°RQC00665097
1964Jun78.9°F80.1°F-1.3°RQC00665097
1964Jul78.6°F80.2°F-1.6°RQC00665097
1964Aug77.7°F80.0°F-2.3°RQC00665097
1964Sep78.1°F79.4°F-1.4°RQC00665097
1964Oct77.0°F78.6°F-1.5°RQC00665097
1964Nov75.2°F77.1°F-1.9°RQC00665097
1964Dec72.4°F74.5°F-2.1°RQC00665097
1965Jan71.2°F73.3°F-2.1°RQC00665097
1965Feb72.2°F73.8°F-1.6°RQC00665097
1965Mar74.9°F74.7°F+0.3°RQC00665097
1965Apr75.4°F76.4°F-1.0°RQC00665097
1965May78.0°F78.7°F-0.7°RQC00665097
1965Jun78.6°F80.1°F-1.5°RQC00665097
1965Jul78.9°F80.2°F-1.3°RQC00665097
1965Aug78.6°F80.0°F-1.3°RQC00665097
1965Sep81.0°F79.4°F+1.5°RQC00665693
1965Oct78.9°F78.6°F+0.3°RQC00665097
1965Nov77.6°F77.1°F+0.5°RQC00665097
1965Dec75.2°F74.5°F+0.7°RQC00665097
1966Jan74.3°F73.3°F+1.0°RQC00665097
1966Feb74.2°F73.8°F+0.3°RQC00665097
1966Mar75.3°F74.7°F+0.6°RQC00665097
1966Apr76.6°F76.4°F+0.1°RQC00665097
1966May77.9°F78.7°F-0.8°RQC00665097
1966Jun79.5°F80.1°F-0.6°RQC00665097
1966Jul80.6°F80.2°F+0.4°RQC00665097
1966Aug80.3°F80.0°F+0.4°RQC00665097
1966Sep79.3°F79.4°F-0.2°RQC00665097
1966Oct79.0°F78.6°F+0.4°RQC00665097
1966Nov76.3°F77.1°F-0.7°RQC00665097
1966Dec74.4°F74.5°F-0.1°RQC00665097
1967Jan73.3°F73.3°F+0.0°RQC00665097
1967Feb73.5°F73.8°F-0.3°RQC00665097
1967Mar72.8°F74.7°F-1.8°RQC00665097
1967Apr74.4°F76.4°F-2.0°RQC00665097
1967May77.2°F78.7°F-1.5°RQC00665097
1967Jun80.1°F80.1°F+0.0°RQC00665097
1967Jul79.7°F80.2°F-0.5°RQC00665097
1967Aug79.3°F80.0°F-0.7°RQC00665097
1967Sep79.0°F79.4°F-0.5°RQC00665097
1967Oct78.9°F78.6°F+0.4°RQC00665097
1967Nov77.5°F77.1°F+0.4°RQC00665097
1967Dec73.5°F74.5°F-1.0°RQC00665097
1968Jan73.0°F73.3°F-0.3°RQC00665097
1968Feb73.2°F73.8°F-0.6°RQC00665097
1968Mar73.6°F74.7°F-1.0°RQC00665097
1968Apr73.3°F76.4°F-3.2°RQC00665097
1968May78.9°F78.7°F+0.2°RQC00665097
1968Jun80.3°F80.1°F+0.2°RQC00665097
1968Jul79.3°F80.2°F-0.9°RQC00665097
1968Aug79.4°F80.0°F-0.6°RQC00665097
1968Sep79.8°F79.4°F+0.4°RQC00665097
1968Oct78.8°F78.6°F+0.3°RQC00665097
1968Nov77.9°F77.1°F+0.8°RQC00665097
1968Dec75.2°F74.5°F+0.7°RQC00665097
1969Jan73.7°F73.3°F+0.4°RQC00665097
1969Feb73.4°F73.8°F-0.5°RQC00665097
1969Mar76.0°F74.7°F+1.4°RQC00665097
1969Apr79.5°F76.4°F+3.1°RQC00665097
1969May80.8°F78.7°F+2.1°RQC00665097
1969Jun82.1°F80.1°F+2.0°RQC00665097
1969Jul80.7°F80.2°F+0.4°RQC00665097
1969Aug80.5°F80.0°F+0.6°RQC00665097
1969Sep80.3°F79.4°F+0.9°RQC00665097
1969Oct79.3°F78.6°F+0.8°RQC00665097
1969Nov77.2°F77.1°F+0.1°RQC00665097
1969Dec75.0°F74.5°F+0.5°RQC00665097
1970Jan74.4°F73.3°F+1.2°RQC00665097
1970Feb73.7°F73.8°F-0.1°RQC00665097
1970Mar74.9°F74.7°F+0.2°RQC00665097
1970Apr76.7°F76.4°F+0.2°RQC00665097
1970May78.0°F78.7°F-0.7°RQC00665097
1970Jun79.9°F80.1°F-0.2°RQC00665097
1970Jul80.2°F80.2°F+0.0°RQC00665097
1970Aug79.8°F80.0°F-0.2°RQC00665097
1970Sep78.9°F79.4°F-0.5°RQC00665097
1970Oct78.4°F78.6°F-0.1°RQC00665097
1970Nov77.3°F77.1°F+0.2°RQC00665097
1970Dec74.6°F74.5°F+0.1°RQC00665097
1971Jan73.6°F73.3°F+0.3°RQC00665097
1971Feb73.3°F73.8°F-0.5°RQC00665097
1971Mar74.6°F74.7°F-0.1°RQC00665097
1971Apr76.4°F76.4°F+0.0°RQC00665097
1971May77.8°F78.7°F-0.9°RQC00665097
1971Jun78.9°F80.1°F-1.3°RQC00665097
1971Jul78.4°F80.2°F-1.8°RQC00665097
1971Aug78.5°F80.0°F-1.5°RQC00665097
1971Sep79.2°F79.4°F-0.3°RQC00665097
1971Oct78.1°F78.6°F-0.5°RQC00665097
1971Nov76.3°F77.1°F-0.8°RQC00665097
1971Dec73.5°F74.5°F-1.0°RQC00665097
1972Jan72.4°F73.3°F-0.9°RQC00665097
1972Feb72.9°F73.8°F-1.0°RQC00665097
1972Mar74.4°F74.7°F-0.2°RQC00665097
1972Apr75.9°F76.4°F-0.6°RQC00665097
1972May77.8°F78.7°F-0.9°RQC00665097
1972Jun80.5°F80.1°F+0.4°RQC00665097
1972Jul80.3°F80.2°F+0.1°RQC00665097
1972Aug80.7°F80.0°F+0.8°RQC00665097
1972Sep80.0°F79.4°F+0.6°RQC00665097
1972Oct79.5°F78.6°F+0.9°RQC00665097
1972Nov77.8°F77.1°F+0.7°RQC00665097
1972Dec75.5°F74.5°F+1.0°RQC00665097
1973Jan75.8°F73.3°F+2.5°RQC00665097
1973Feb75.5°F73.8°F+1.7°RQC00665097
1973Mar75.9°F74.7°F+1.2°RQC00665097
1973Apr76.7°F76.4°F+0.2°RQC00665097
1973May79.5°F78.7°F+0.8°RQC00665097
1973Jun79.9°F80.1°F-0.2°RQC00665097
1973Jul79.8°F80.2°F-0.4°RQC00665097
1973Aug79.3°F80.0°F-0.7°RQC00665097
1973Sep79.1°F79.4°F-0.3°RQC00665097
1973Oct77.8°F78.6°F-0.8°RQC00665097
1973Nov74.9°F77.1°F-2.1°RQC00665097
1973Dec72.0°F74.5°F-2.5°RQC00665097
1974Jan71.0°F73.3°F-2.2°RQC00665097
1974Feb72.1°F73.8°F-1.8°RQC00665097
1974Mar72.0°F74.7°F-2.7°RQC00665097
1974Apr74.4°F76.4°F-2.1°RQC00665097
1974May76.9°F78.7°F-1.8°RQC00665097
1974Jun78.4°F80.1°F-1.7°RQC00665097
1974Jul78.4°F80.2°F-1.8°RQC00665097
1974Aug78.2°F80.0°F-1.8°RQC00665097
1974Sep77.7°F79.4°F-1.8°RQC00665097
1974Oct77.6°F78.6°F-1.0°RQC00665097
1974Nov75.9°F77.1°F-1.2°RQC00665097
1974Dec74.1°F74.5°F-0.4°RQC00665097
1975Jan72.8°F73.3°F-0.4°RQC00665097
1975Feb72.8°F73.8°F-1.0°RQC00665097
1975Mar74.3°F74.7°F-0.4°RQC00665097
1975Apr75.5°F76.4°F-1.0°RQC00665097
1975May78.4°F78.7°F-0.4°RQC00665097
1975Jun79.8°F80.1°F-0.3°RQC00665097
1975Jul79.0°F80.2°F-1.2°RQC00665097
1975Aug79.1°F80.0°F-0.9°RQC00665097
1975Sep78.8°F79.4°F-0.7°RQC00665097
1975Oct77.9°F78.6°F-0.6°RQC00665097
1975Nov76.4°F77.1°F-0.7°RQC00665097
1975Dec73.3°F74.5°F-1.2°RQC00665097
1976Jan71.1°F73.3°F-2.2°RQC00665097
1976Feb71.8°F73.8°F-2.1°RQC00665097
1976Mar72.3°F74.7°F-2.4°RQC00665097
1976Apr74.9°F76.4°F-1.6°RQC00665097
1976May77.3°F78.7°F-1.4°RQC00665097
1976Jun79.6°F80.1°F-0.5°RQC00665097
1976Jul80.0°F80.2°F-0.2°RQC00665097
1976Aug79.8°F80.0°F-0.2°RQC00665097
1976Sep79.9°F79.4°F+0.4°RQC00665097
1976Oct79.1°F78.6°F+0.6°RQC00665097
1976Nov77.6°F77.1°F+0.5°RQC00665097
1976Dec74.8°F74.5°F+0.3°RQC00665097
1977Jan74.4°F73.3°F+1.1°RQC00665097
1977Feb74.9°F73.8°F+1.0°RQC00665097
1977Mar74.9°F74.7°F+0.3°RQC00665097
1977Apr75.8°F76.4°F-0.7°RQC00665097
1977May78.4°F78.7°F-0.3°RQC00665097
1977Jun79.8°F80.1°F-0.3°RQC00665097
1977Jul79.4°F80.2°F-0.8°RQC00665097
1977Aug79.6°F80.0°F-0.4°RQC00665097
1977Sep79.4°F79.4°F-0.1°RQC00665097
1977Oct78.9°F78.6°F+0.4°RQC00665097
1977Nov78.2°F77.1°F+1.1°RQC00665097
1977Dec76.0°F74.5°F+1.5°RQC00665097
1978Jan74.0°F73.3°F+0.7°RQC00665097
1978Feb75.2°F73.8°F+1.4°RQC00665097
1978Mar76.1°F74.7°F+1.4°RQC00665097
1978Apr77.5°F76.4°F+1.0°RQC00665097
1978May79.9°F78.7°F+1.2°RQC00665097
1978Jun81.5°F80.1°F+1.4°RQC00665097
1978Jul81.1°F80.2°F+0.9°RQC00665097
1978Aug80.5°F80.0°F+0.6°RQC00665097
1978Sep80.0°F79.4°F+0.5°RQC00665097
1978Oct79.4°F78.6°F+0.8°RQC00665097
1978Nov77.5°F77.1°F+0.4°RQC00665097
1978Dec75.1°F74.5°F+0.6°RQC00665097
1979Jan73.6°F73.3°F+0.3°RQC00665097
1979Feb74.2°F73.8°F+0.4°RQC00665097
1979Mar75.3°F74.7°F+0.6°RQC00665097
1979Apr77.3°F76.4°F+0.9°RQC00665097
1979May79.0°F78.7°F+0.3°RQC00665097
1979Jun80.0°F80.1°F-0.1°RQC00665097
1979Jul80.2°F80.2°F+0.0°RQC00665097
1979Aug80.2°F80.0°F+0.3°RQC00665097
1979Sep79.3°F79.4°F-0.2°RQC00665097
1979Oct80.1°F78.6°F+1.5°RQC00665097
1979Nov78.5°F77.1°F+1.4°RQC00665097
1979Dec74.9°F74.5°F+0.4°RQC00665097
1980Jan74.3°F73.3°F+1.0°RQC00665097
1980Feb74.8°F73.8°F+0.9°RQC00665097
1980Mar75.1°F74.7°F+0.4°RQC00665097
1980Apr76.9°F76.4°F+0.5°RQC00665097
1980May79.5°F78.7°F+0.8°RQC00665097
1980Jun80.6°F80.1°F+0.5°RQC00665097
1980Jul80.8°F80.2°F+0.6°RQC00665097
1980Aug80.6°F80.0°F+0.7°RQC00665097
1980Sep81.2°F79.4°F+1.8°RQC00665097
1980Oct80.6°F78.6°F+2.0°RQC00665097
1980Nov78.7°F77.1°F+1.6°RQC00665097
1980Dec76.4°F74.5°F+1.9°RQC00665097
1981Jan75.4°F73.3°F+2.2°RQC00665097
1981Feb75.1°F73.8°F+1.3°RQC00665097
1981Mar77.4°F74.7°F+2.7°RQC00665097
1981Apr77.2°F76.4°F+0.8°RQC00665097
1981May80.0°F78.7°F+1.2°RQC00665097
1981Jun80.0°F80.1°F-0.2°RQC00665097
1981Jul81.2°F80.2°F+0.9°RQC00665097
1981Aug81.1°F80.0°F+1.1°RQC00665097
1981Sep80.1°F79.4°F+0.6°RQC00665097
1981Oct79.5°F78.6°F+1.0°RQC00665097
1981Nov79.1°F77.1°F+2.0°RQC00665097
1981Dec77.1°F74.5°F+2.6°RQC00665097
1982Jan74.6°F73.3°F+1.3°RQC00665097
1982Feb74.8°F73.8°F+1.0°RQC00665097
1982Mar74.3°F74.7°F-0.4°RQC00665097
1982Apr76.8°F76.4°F+0.4°RQC00665097
1982May78.2°F78.7°F-0.5°RQC00665097
1982Jun80.7°F80.1°F+0.6°RQC00665097
1982Jul80.3°F80.2°F+0.1°RQC00665097
1982Aug80.0°F80.0°F+0.1°RQC00665097
1982Sep80.4°F79.4°F+0.9°RQC00665097
1982Oct79.2°F78.6°F+0.6°RQC00665097
1982Nov77.5°F77.1°F+0.4°RQC00665097
1982Dec74.5°F74.5°F+0.0°RQC00665097
1983Jan75.0°F73.3°F+1.7°RQC00665097
1983Feb75.0°F73.8°F+1.2°RQC00665097
1983Mar77.2°F74.7°F+2.5°RQC00665097
1983Apr76.6°F76.4°F+0.2°RQC00665097
1983May79.3°F78.7°F+0.6°RQC00665097
1983Jun81.1°F80.1°F+1.0°RQC00665097
1983Jul81.8°F80.2°F+1.6°RQC00665097
1983Aug81.2°F80.0°F+1.3°RQC00665097
1983Sep81.0°F79.4°F+1.5°RQC00665097
1983Oct80.1°F78.6°F+1.5°RQC00665097
1983Nov77.5°F77.1°F+0.4°RQC00665097
1983Dec75.7°F74.5°F+1.2°RQC00665097
1984Jan74.5°F73.3°F+1.2°RQC00665097
1984Feb74.2°F73.8°F+0.3°RQC00665097
1984Mar74.7°F74.7°F+0.1°RQC00665097
1984Apr77.6°F76.4°F+1.1°RQC00665097
1984May78.3°F78.7°F-0.5°RQC00665097
1984Jun80.4°F80.1°F+0.3°RQC00665097
1984Jul79.8°F80.2°F-0.4°RQC00665097
1984Aug80.2°F80.0°F+0.2°RQC00665097
1984Sep76.2°F79.4°F-3.3°RQC00665908
1984Oct77.3°F78.6°F-1.3°RQC00665097
1984Nov75.5°F77.1°F-1.6°RQC00665097
1984Dec74.2°F74.5°F-0.3°RQC00665097
1985Jan72.5°F73.3°F-0.8°RQC00665097
1985Feb73.6°F73.8°F-0.3°RQC00665097
1985Mar74.8°F74.7°F+0.2°RQC00665097
1985Apr75.9°F76.4°F-0.5°RQC00665097
1985May78.7°F78.7°F-0.1°RQC00665097
1985Jun79.8°F80.1°F-0.4°RQC00665097
1985Jul81.4°F80.2°F+1.2°RQC00665097
1985Aug81.3°F80.0°F+1.4°RQC00665097
1985Sep80.1°F79.4°F+0.6°RQC00665097
1985Oct77.9°F78.6°F-0.7°RQC00665097
1985Nov76.9°F77.1°F-0.2°RQC00665097
1985Dec74.1°F74.5°F-0.4°RQC00665097
1986Jan74.0°F73.3°F+0.7°RQC00665097
1986Feb73.5°F73.8°F-0.4°RQC00665097
1986Mar75.6°F74.7°F+1.0°RQC00665097
1986Apr78.6°F76.4°F+2.2°RQC00665097
1986May79.1°F78.7°F+0.4°RQC00665097
1986Jun79.5°F80.1°F-0.6°RQC00665097
1986Jul79.6°F80.2°F-0.6°RQC00665097
1986Aug80.6°F80.0°F+0.6°RQC00665097
1986Sep79.7°F79.4°F+0.2°RQC00665097
1986Oct79.1°F78.6°F+0.5°RQC00665097
1986Nov77.6°F77.1°F+0.5°RQC00665097
1986Dec75.5°F74.5°F+1.0°RQC00665097
1987Jan73.8°F73.3°F+0.5°RQC00665097
1987Feb74.3°F73.8°F+0.5°RQC00665097
1987Mar75.5°F74.7°F+0.8°RQC00665097
1987Apr79.6°F76.4°F+3.1°RQC00665097
1987May80.7°F78.7°F+2.0°RQC00665097
1987Jun80.5°F80.1°F+0.4°RQC00665097
1987Jul81.0°F80.2°F+0.8°RQC00665097
1987Aug81.9°F80.0°F+1.9°RQC00665097
1987Sep81.4°F79.4°F+1.9°RQC00665097
1987Oct80.7°F78.6°F+2.1°RQC00665097
1987Nov78.9°F77.1°F+1.8°RQC00665097
1987Dec77.3°F74.5°F+2.8°RQC00665097
1988Jan74.5°F73.3°F+1.3°RQC00665097
1988Feb74.7°F73.8°F+0.8°RQC00665097
1988Mar74.8°F74.7°F+0.2°RQC00665097
1988Apr77.5°F76.4°F+1.0°RQC00665097
1988May79.4°F78.7°F+0.7°RQC00665097
1988Jun81.1°F80.1°F+0.9°RQC00665097
1988Jul80.3°F80.2°F+0.1°RQC00665097
1988Aug79.6°F80.0°F-0.4°RQC00665097
1988Sep79.5°F79.4°F+0.0°RQC00665097
1988Oct78.7°F78.6°F+0.2°RQC00665097
1988Nov76.7°F77.1°F-0.4°RQC00665097
1988Dec74.3°F74.5°F-0.2°RQC00665097
1989Jan73.1°F73.3°F-0.2°RQC00665097
1989Feb73.2°F73.8°F-0.6°RQC00665097
1989Mar73.7°F74.7°F-0.9°RQC00665097
1989Apr74.7°F76.4°F-1.7°RQC00665097
1989May77.9°F78.7°F-0.8°RQC00665097
1989Jun79.7°F80.1°F-0.4°RQC00665097
1989Jul80.7°F80.2°F+0.4°RQC00665097
1989Aug79.4°F80.0°F-0.5°RQC00665097
1989Sep80.0°F79.4°F+0.6°RQC00665097
1989Oct77.8°F78.6°F-0.7°RQC00665097
1989Nov77.5°F77.1°F+0.4°RQC00665097
1989Dec75.7°F74.5°F+1.2°RQC00665097
1990Jan73.8°F73.3°F+0.6°RQC00665097
1990Feb73.5°F73.8°F-0.4°RQC00665097
1990Mar74.2°F74.7°F-0.5°RQC00665097
1990Apr75.7°F76.4°F-0.8°RQC00665097
1990May78.1°F78.7°F-0.6°RQC00665097
1990Jun79.9°F80.1°F-0.2°RQC00665097
1990Jul80.4°F80.2°F+0.2°RQC00665097
1990Aug80.2°F80.0°F+0.3°RQC00665097
1990Sep80.1°F79.4°F+0.6°RQC00665097
1990Oct79.3°F78.6°F+0.7°RQC00665097
1990Nov77.9°F77.1°F+0.8°RQC00665097
1990Dec74.6°F74.5°F+0.1°RQC00665097
1991Jan74.0°F73.3°F+0.7°RQC00665097
1991Feb74.4°F73.8°F+0.6°RQC00665097
1991Mar74.6°F74.7°F-0.1°RQC00665097
1991Apr76.3°F76.4°F-0.2°RQC00665097
1991May77.2°F78.7°F-1.5°RQC00665097
1991Jun77.5°F80.1°F-2.6°RQC00665097
1991Jul78.7°F80.2°F-1.5°RQC00665097
1991Aug79.7°F80.0°F-0.3°RQC00665097
1991Sep80.8°F79.4°F+1.4°RQC00665097
1991Oct79.5°F78.6°F+0.9°RQC00665097
1991Nov76.7°F77.1°F-0.3°RQC00665097
1991Dec72.9°F74.5°F-1.6°RQC00665097
1992Jan72.6°F73.3°F-0.7°RQC00666073
1992Feb73.4°F73.8°F-0.5°RQC00666073
1992Mar72.3°F74.7°F-2.4°RQC00665097
1992Apr76.0°F76.4°F-0.5°RQC00665097
1992May78.6°F78.7°F-0.1°RQC00665097
1992Jun80.4°F80.1°F+0.3°RQC00665097
1992Jul80.0°F80.2°F-0.3°RQC00665097
1992Aug78.8°F80.0°F-1.1°RQC00665097
1992Sep79.1°F79.4°F-0.3°RQC00665097
1992Oct78.0°F78.6°F-0.6°RQC00665097
1992Nov75.5°F77.1°F-1.6°RQC00665097
1992Dec75.0°F74.5°F+0.5°RQC00666073
1993Jan73.0°F73.3°F-0.3°RQC00666073
1993Feb71.6°F73.8°F-2.2°RQC00665097
1993Mar74.1°F74.7°F-0.6°RQC00665097
1993Apr76.7°F76.4°F+0.2°RQC00665097
1993May78.1°F78.7°F-0.7°RQC00666073
1993Jun81.7°F80.1°F+1.6°RQC00665693
1993Jul78.8°F80.2°F-1.4°RQC00665097
1993Aug78.2°F80.0°F-1.8°RQC00665097
1993Sep77.2°F79.4°F-2.2°RQC00665097
1993Oct76.4°F78.6°F-2.2°RQC00665097
1993Nov76.0°F77.1°F-1.1°RQC00665097
1993Dec74.5°F74.5°F+0.0°RQC00665097
1994Jan72.6°F73.3°F-0.6°RQC00665097
1994Feb73.0°F73.8°F-0.8°RQC00665097
1994Mar74.7°F74.7°F+0.0°RQC00665097
1994Apr74.1°F76.4°F-2.3°RQC00665097
1994May77.8°F78.7°F-1.0°RQC00665097
1994Jun78.5°F80.1°F-1.6°RQC00665097
1994Jul79.8°F80.2°F-0.4°RQC00665693
1994Aug77.5°F80.0°F-2.5°RQC00665097
1994Sep77.1°F79.4°F-2.3°RQC00665097
1994Oct75.8°F78.6°F-2.8°RQC00665097
1994Nov74.3°F77.1°F-2.8°RQC00665097
1994Dec71.3°F74.5°F-3.2°RQC00665097
1995Jan70.2°F73.3°F-3.0°RQC00665097
1995Feb74.8°F73.8°F+0.9°RQC00665097
1995Mar73.1°F74.7°F-1.6°RQC00665097
1995Apr75.9°F76.4°F-0.5°RQC00665097
1995May78.6°F78.7°F-0.1°RQC00665097
1995Jun79.8°F80.1°F-0.3°RQC00665097
1995Jul79.7°F80.2°F-0.5°RQC00665097
1995Aug79.2°F80.0°F-0.8°RQC00665097
1995Sep79.1°F79.4°F-0.4°RQC00665097
1995Oct77.8°F78.6°F-0.7°RQC00665097
1995Nov75.1°F77.1°F-1.9°RQC00665097
1995Dec75.7°F74.5°F+1.2°RQC00665097
1996Jan73.4°F73.3°F+0.2°RQC00665097
1996Feb73.8°F73.8°F-0.1°RQC00665097
1996Mar73.7°F74.7°F-1.0°RQC00665097
1996Apr74.7°F76.4°F-1.8°RQC00665097
1996May76.7°F78.7°F-2.0°RQC00665097
1996Jun77.3°F80.1°F-2.8°RQC00665097
1996Jul78.2°F80.2°F-2.1°RQC00665097
1996Aug77.5°F80.0°F-2.5°RQC00665097
1996Sep77.7°F79.4°F-1.7°RQC00665097
1996Oct76.9°F78.6°F-1.6°RQC00665097
1996Nov74.9°F77.1°F-2.1°RQC00665097
1996Dec70.3°F74.5°F-4.2°RQC00665097
1997Jan72.9°F73.3°F-0.4°RQC00665097
1997Feb73.5°F73.8°F-0.3°RQC00665097
1997Mar73.9°F74.7°F-0.8°RQC00665097
1997Apr75.5°F76.4°F-1.0°RQC00665097
1997May78.8°F78.7°F+0.1°RQC00665097
1997Jun82.5°F80.1°F+2.3°RQC00665097
1997Jul82.4°F80.2°F+2.2°RQC00665097
1997Aug81.6°F80.0°F+1.6°RQC00665097
1997Sep79.4°F79.4°F-0.1°RQC00665097
1997Oct74.4°F78.6°F-4.1°RQC00665097
1997Nov76.0°F77.1°F-1.1°RQC00665097
1997Dec70.0°F74.5°F-4.5°RQC00665097
1998Jan69.6°F73.3°F-3.7°RQC00665097
1998Feb76.0°F73.8°F+2.1°RQC00665097
1998Mar77.4°F74.7°F+2.8°RQC00665097
1998Apr78.6°F76.4°F+2.2°RQC00665097
1998May80.8°F78.7°F+2.1°RQC00665097
1998Jun81.9°F80.1°F+1.8°RQC00665097
1998Jul81.8°F80.2°F+1.6°RQC00665097
1998Aug82.0°F80.0°F+2.0°RQC00665097
1998Sep81.1°F79.4°F+1.6°RQC00665097
1998Oct80.7°F78.6°F+2.1°RQC00665097
1998Nov78.5°F77.1°F+1.4°RQC00665097
1998Dec77.1°F74.5°F+2.6°RQC00665097
1999Jan74.2°F73.3°F+0.9°RQC00665097
1999Feb72.0°F73.8°F-1.9°RQC00665097
1999Mar75.3°F74.7°F+0.7°RQC00665097
1999Apr77.5°F76.4°F+1.0°RQC00665097
1999May81.0°F78.7°F+2.3°RQC00665097
1999Jun80.9°F80.1°F+0.8°RQC00665097
1999Jul80.8°F80.2°F+0.6°RQC00665097
1999Aug81.1°F80.0°F+1.1°RQC00665097
1999Sep79.7°F79.4°F+0.3°RQC00665097
1999Oct79.8°F78.6°F+1.3°RQC00665097
1999Nov79.2°F77.1°F+2.1°RQC00665097
1999Dec72.5°F74.5°F-2.0°RQC00666073
2000Jan71.5°F73.3°F-1.7°RQC00666073
2000Feb73.5°F73.8°F-0.4°RQC00665097
2000Mar72.9°F74.7°F-1.7°RQC00665097
2000Apr75.5°F76.4°F-1.0°RQC00665097
2000May77.4°F78.7°F-1.3°RQC00665097
2000Jun79.4°F80.1°F-0.7°RQC00665097
2000Jul80.4°F80.2°F+0.2°RQC00665097
2000Aug80.8°F80.0°F+0.8°RQC00665097
2000Sep80.1°F79.4°F+0.6°RQC00665097
2000Oct79.8°F78.6°F+1.2°RQC00665097
2000Nov77.6°F77.1°F+0.6°RQC00665097
2000Dec76.2°F74.5°F+1.7°RQC00665097
2001Jan74.6°F73.3°F+1.3°RQC00665097
2001Feb73.8°F73.8°F-0.1°RQC00665097
2001Mar75.6°F74.7°F+0.9°RQC00665097
2001Apr76.0°F76.4°F-0.4°RQC00665097
2001May78.4°F78.7°F-0.3°RQC00665097
2001Jun80.0°F80.1°F-0.1°RQC00665097
2001Jul81.2°F80.2°F+1.0°RQC00665097
2001Aug82.3°F80.0°F+2.4°RQC00665097
2001Sep81.1°F79.4°F+1.7°RQC00665097
2001Oct77.9°F78.6°F-0.7°RQC00666073
2001Nov78.1°F77.1°F+1.1°RQC00665097
2001Dec74.6°F74.5°F+0.1°RQC00666073
2002Jan75.9°F73.3°F+2.6°RQC00665097
2002Feb74.2°F73.8°F+0.4°RQC00665097
2002Mar76.1°F74.7°F+1.4°RQC00665097
2002Apr77.0°F76.4°F+0.6°RQC00665097
2002May78.9°F78.7°F+0.1°RQC00665097
2002Jun80.7°F80.1°F+0.6°RQC00665097
2002Jul81.7°F80.2°F+1.5°RQC00665097
2002Aug81.5°F80.0°F+1.5°RQC00665097
2002Sep80.9°F79.4°F+1.5°RQC00665097
2002Oct80.1°F78.6°F+1.5°RQC00665097
2002Nov79.3°F77.1°F+2.2°RQC00665097
2002Dec76.7°F74.5°F+2.2°RQC00665097
2003Jan76.5°F73.3°F+3.2°RQC00665097
2003Feb76.4°F73.8°F+2.5°RQC00665097
2003Mar77.2°F74.7°F+2.5°RQC00665097
2003Apr77.6°F76.4°F+1.2°RQC00665097
2003May78.7°F78.7°F+0.0°RQC00665097
2003Jun80.5°F80.1°F+0.4°RQC00665097
2003Jul81.1°F80.2°F+0.9°RQC00665097
2003Aug81.5°F80.0°F+1.6°RQC00665097
2003Sep81.1°F79.4°F+1.6°RQC00665097
2003Oct80.5°F78.6°F+1.9°RQC00665097
2003Nov78.9°F77.1°F+1.8°RQC00665097
2003Dec72.7°F74.5°F-1.8°RQC00660061
2004Jan69.8°F73.3°F-3.5°RQC00660061
2004Feb74.7°F73.8°F+0.9°RQC00665097
2004Mar75.2°F74.7°F+0.5°RQC00665097
2004Apr76.8°F76.4°F+0.3°RQC00665097
2004May78.6°F78.7°F-0.1°RQC00665097
2004Jun80.3°F80.1°F+0.2°RQC00665097
2004Jul80.4°F80.2°F+0.2°RQC00665097
2004Aug80.8°F80.0°F+0.8°RQC00665097
2004Sep80.7°F79.4°F+1.2°RQC00665097
2004Oct79.4°F78.6°F+0.9°RQC00665097
2004Nov77.3°F77.1°F+0.3°RQC00665097
2004Dec73.6°F74.5°F-0.9°RQC00666073
2005Jan71.2°F73.3°F-2.1°RQC00660061
2005Feb71.9°F73.8°F-2.0°RQC00665097
2005Mar76.7°F74.7°F+2.1°RQC00665097
2005Apr79.6°F76.4°F+3.2°RQC00665097
2005May80.0°F78.7°F+1.3°RQC00665097
2005Jun80.9°F80.1°F+0.8°RQC00665097
2005Jul81.6°F80.2°F+1.3°RQC00665097
2005Aug81.5°F80.0°F+1.6°RQC00665097
2005Sep82.1°F79.4°F+2.6°RQC00665097
2005Oct79.9°F78.6°F+1.3°RQC00665097
2005Nov78.5°F77.1°F+1.4°RQC00665097
2005Dec74.5°F74.5°F+0.0°RQC00665097
2006Jan75.3°F73.3°F+2.1°RQC00665097
2006Feb73.4°F73.8°F-0.4°RQC00665097
2006Mar74.7°F74.7°F+0.0°RQC00665097
2006Apr77.2°F76.4°F+0.7°RQC00665097
2006May79.6°F78.7°F+0.9°RQC00665097
2006Jun81.1°F80.1°F+0.9°RQC00665097
2006Jul80.6°F80.2°F+0.4°RQC00665097
2006Aug80.9°F80.0°F+0.9°RQC00665097
2006Sep81.2°F79.4°F+1.7°RQC00665097
2006Oct81.0°F78.6°F+2.5°RQC00665097
2006Nov78.7°F77.1°F+1.7°RQC00665097
2006Dec74.9°F74.5°F+0.4°RQC00666073
2007Jan76.6°F73.3°F+3.3°RQC00665693
2007Feb75.4°F73.8°F+1.6°RQC00665097
2007Mar77.1°F74.7°F+2.4°RQC00665097
2007Apr78.3°F76.4°F+1.8°RQC00665097
2007May81.2°F78.7°F+2.5°RQC00665097
2007Jun82.0°F80.1°F+1.9°RQC00665097
2007Jul81.2°F80.2°F+1.0°RQC00665097
2007Aug81.0°F80.0°F+1.0°RQC00665097
2007Sep80.5°F79.4°F+1.1°RQC00665097
2007Oct80.6°F78.6°F+2.0°RQC00665097
2007Nov78.8°F77.1°F+1.7°RQC00665097
2007Dec74.4°F74.5°F-0.1°RQC00666073
2008Jan70.9°F73.3°F-2.3°RQC00660061
2008Feb74.8°F73.8°F+0.9°RQC00665097
2008Mar74.9°F74.7°F+0.2°RQC00665097
2008Apr77.7°F76.4°F+1.2°RQC00665097
2008May79.1°F78.7°F+0.3°RQC00665097
2008Jun81.5°F80.1°F+1.4°RQC00665097
2008Jul81.6°F80.2°F+1.3°RQC00665097
2008Aug81.2°F80.0°F+1.2°RQC00665097
2008Sep80.7°F79.4°F+1.2°RQC00665097
2008Oct80.1°F78.6°F+1.5°RQC00665097
2008Nov77.8°F77.1°F+0.8°RQC00665097
2008Dec73.7°F74.5°F-0.8°RQC00666440
2009Jan74.0°F73.3°F+0.7°RQC00666440
2009Feb74.0°F73.8°F+0.1°RQC00665097
2009Mar74.4°F74.7°F-0.2°RQC00665097
2009Apr76.3°F76.4°F-0.2°RQC00665097
2009May79.0°F78.7°F+0.3°RQC00665097
2009Jun81.2°F80.1°F+1.1°RQC00665097
2009Jul81.4°F80.2°F+1.1°RQC00665097
2009Aug81.1°F80.0°F+1.1°RQC00665097
2009Sep81.2°F79.4°F+1.8°RQC00665097
2009Oct81.1°F78.6°F+2.6°RQC00665693
2009Nov76.1°F77.1°F-1.0°RQC00660061
2009Dec77.3°F74.5°F+2.8°RQC00665097
2010Jan71.1°F73.3°F-2.2°RQC00660061
2010Feb77.2°F73.8°F+3.4°RQC00665097
2010Mar78.3°F74.7°F+3.7°RQC00665097
2010Apr75.3°F76.4°F-1.2°RQC00660061
2010May80.8°F78.7°F+2.1°RQC00665097
2010Jun81.6°F80.1°F+1.4°RQC00665097
2010Jul78.1°F80.2°F-2.1°RQC00660061
2010Aug82.0°F80.0°F+2.1°RQC00665097
2010Sep78.1°F79.4°F-1.4°RQC00660061
2010Oct79.9°F78.6°F+1.3°RQC00665097
2010Nov72.8°F77.1°F-4.3°RQC00660061
2010Dec70.5°F74.5°F-4.0°RQC00660061
2011Jan73.9°F73.3°F+0.6°RQC00666073
2011Feb74.9°F73.8°F+1.1°RQC00665097
2011Mar74.5°F74.7°F-0.2°RQC00665097
2011Apr76.7°F76.4°F+0.2°RQC00665097
2011May78.0°F78.7°F-0.7°RQC00665097
2011Jun80.7°F80.1°F+0.6°RQC00665097
2011Jul81.3°F80.2°F+1.1°RQC00665097
2011Aug81.0°F80.0°F+1.0°RQC00665097
2011Sep80.1°F79.4°F+0.6°RQC00665097
2011Oct79.8°F78.6°F+1.3°RQC00665097
2011Nov78.8°F77.1°F+1.7°RQC00665097
2011Dec76.0°F74.5°F+1.5°RQC00665097
2012Jan74.2°F73.3°F+0.9°RQC00665097
2012Feb74.2°F73.8°F+0.4°RQC00665097
2012Mar74.2°F74.7°F-0.4°RQC00665097
2012Apr76.8°F76.4°F+0.4°RQC00665097
2012May78.8°F78.7°F+0.1°RQC00665097
2012Jun81.3°F80.1°F+1.2°RQC00665097
2012Jul80.8°F80.2°F+0.6°RQC00665097
2012Aug80.7°F80.0°F+0.8°RQC00665097
2012Sep80.8°F79.4°F+1.4°RQC00665097
2012Oct81.4°F78.6°F+2.9°RQC00665097
2012Nov80.2°F77.1°F+3.2°RQC00665097
2012Dec75.8°F74.5°F+1.3°RQC00666073
2013Jan75.0°F73.3°F+1.8°RQC00665097
2013Feb74.5°F73.8°F+0.7°RQC00665097
2013Mar76.7°F74.7°F+2.0°RQC00665097
2013Apr77.1°F76.4°F+0.6°RQC00665097
2013May79.8°F78.7°F+1.0°RQC00665097
2013Jun76.4°F80.1°F-3.7°RQC00660061
2013Jul80.9°F80.2°F+0.7°RQC00665097
2013Aug81.8°F80.0°F+1.9°RQC00665097
2013Sep81.6°F79.4°F+2.1°RQC00665097
2013Oct81.3°F78.6°F+2.7°RQC00665097
2013Nov79.5°F77.1°F+2.4°RQC00665097
2013Dec76.8°F74.5°F+2.3°RQC00665097
2014Jan75.1°F73.3°F+1.9°RQC00665097
2014Feb75.7°F73.8°F+1.9°RQC00665097
2014Mar76.0°F74.7°F+1.3°RQC00665097
2014Apr78.8°F76.4°F+2.4°RQC00665693
2014May78.9°F78.7°F+0.2°RQC00665097
2014Jun80.0°F80.1°F-0.1°RQC00665097
2014Jul81.3°F80.2°F+1.1°RQC00665693
2014Aug81.1°F80.0°F+1.1°RQC00665097
2014Sep80.8°F79.4°F+1.4°RQC00665097
2014Oct80.5°F78.6°F+1.9°RQC00665097
2014Nov79.7°F77.1°F+2.6°RQC00665097
2014Dec71.3°F74.5°F-3.2°RQC00660061
2015Jan75.9°F73.3°F+2.6°RQC00665097
2015Feb76.3°F73.8°F+2.5°RQC00665097
2015Mar75.0°F74.7°F+0.4°RQC00665097
2015Apr76.7°F76.4°F+0.3°RQC00665097
2015May79.1°F78.7°F+0.4°RQC00665097
2015Jun81.4°F80.1°F+1.3°RQC00665097
2015Jul81.4°F80.2°F+1.2°RQC00665097
2015Aug81.2°F80.0°F+1.2°RQC00665097
2015Sep82.0°F79.4°F+2.5°RQC00665097
2015Oct82.1°F78.6°F+3.6°RQC00665097
2015Nov80.2°F77.1°F+3.1°RQC00665693
2015Dec77.4°F74.5°F+2.9°RQC00662801
2016Jan76.8°F73.3°F+3.5°RQC00665097
2016Feb76.7°F73.8°F+2.9°RQC00665097
2016Mar76.2°F74.7°F+1.6°RQC00665097
2016Apr79.5°F76.4°F+3.0°RQC00665693
2016May81.4°F78.7°F+2.7°RQC00665693
2016Jun82.3°F80.1°F+2.1°RQC00665693
2016Jul82.8°F80.2°F+2.6°RQC00665693
2016Aug81.1°F80.0°F+1.1°RQC00665097
2016Sep81.4°F79.4°F+1.9°RQC00665097
2016Oct81.2°F78.6°F+2.6°RQC00665097
2016Nov79.9°F77.1°F+2.8°RQC00665097
2016Dec78.5°F74.5°F+4.0°RQC00665693
2017Jan74.2°F73.3°F+0.9°RQC00665097
2017Feb75.4°F73.8°F+1.6°RQC00665097
2017Mar76.9°F74.7°F+2.3°RQC00665097
2017Apr77.9°F76.4°F+1.4°RQC00665693
2017May79.7°F78.7°F+1.0°RQC00665097
2017Jun79.5°F80.1°F-0.6°RQC00665693
2017Jul81.2°F80.2°F+1.0°RQC00665693
2017Aug80.7°F80.0°F+0.8°RQC00665693
2017Oct80.3°F78.6°F+1.8°RQC00665097
2017Nov79.3°F77.1°F+2.2°RQC00665097
2017Dec77.2°F74.5°F+2.7°RQC00662801
2018Jan76.1°F73.3°F+2.8°RQC00665097
2018Feb75.7°F73.8°F+1.9°RQC00665097
2018Mar75.8°F74.7°F+1.2°RQC00665097
2018Apr77.6°F76.4°F+1.1°RQC00665097
2018May79.1°F78.7°F+0.4°RQC00665097
2018Jun81.5°F80.1°F+1.4°RQC00665097
2018Jul82.0°F80.2°F+1.8°RQC00665097
2018Aug81.3°F80.0°F+1.3°RQC00665097
2018Sep80.9°F79.4°F+1.4°RQC00665097
2018Oct80.2°F78.6°F+1.7°RQC00665097
2018Nov78.1°F77.1°F+1.0°RQC00665097
2018Dec76.7°F74.5°F+2.2°RQC00665097
2019Jan75.1°F73.3°F+1.9°RQC00665097
2019Feb74.9°F73.8°F+1.1°RQC00665097
2019Mar76.2°F74.7°F+1.6°RQC00665097
2019Apr77.1°F76.4°F+0.7°RQC00665097
2019May80.5°F78.7°F+1.8°RQC00665097
2019Jun79.9°F80.1°F-0.2°RQC00665693
2019Jul80.6°F80.2°F+0.4°RQC00665693
2019Aug82.9°F80.0°F+2.9°RQC00665097
2019Sep82.4°F79.4°F+2.9°RQC00665097
2019Oct81.2°F78.6°F+2.6°RQC00665097
2019Nov79.7°F77.1°F+2.6°RQC00665097
2019Dec77.3°F74.5°F+2.8°RQC00665693
2020Jan75.5°F73.3°F+2.3°RQC00665693
2020Feb76.7°F73.8°F+2.9°RQC00665097
2020Mar70.9°F74.7°F-3.7°RQC00665908
2020Apr74.2°F76.4°F-2.2°RQC00665908
2020May75.9°F78.7°F-2.8°RQC00665908
2020Jun82.8°F80.1°F+2.7°RQC00665097
2020Jul76.0°F80.2°F-4.3°RQC00665908
2020Aug82.1°F80.0°F+2.2°RQC00665097
2020Sep81.7°F79.4°F+2.3°RQC00665097
2020Oct81.2°F78.6°F+2.7°RQC00665097
2020Nov78.2°F77.1°F+1.1°RQC00665097
2020Dec76.4°F74.5°F+1.9°RQC00665097
2021Jan74.3°F73.3°F+1.1°RQC00665693
2021Feb75.7°F73.8°F+1.8°RQC00665097
2021Mar76.0°F74.7°F+1.3°RQC00665097
2021Apr78.0°F76.4°F+1.5°RQC00665097
2021May78.1°F78.7°F-0.6°RQC00665693
2021Jun79.0°F80.1°F-1.1°RQC00665693
2021Jul80.2°F80.2°F+0.0°RQC00665693
2021Aug81.8°F80.0°F+1.8°RQC00665097
2021Sep80.4°F79.4°F+0.9°RQC00665693
2021Oct79.4°F78.6°F+0.8°RQC00665693
2021Nov77.9°F77.1°F+0.8°RQC00665693
2021Dec75.7°F74.5°F+1.2°RQC00665693
2022Jan75.7°F73.3°F+2.4°RQC00665097
2022Feb74.0°F73.8°F+0.1°RQC00665693
2022Mar74.9°F74.7°F+0.3°RQC00665693
2022Apr75.4°F76.4°F-1.1°RQC00665693
2022May78.2°F78.7°F-0.5°RQC00665693
2022Jun79.7°F80.1°F-0.5°RQC00665693
2022Jul80.1°F80.2°F-0.2°RQC00665693
2022Aug80.5°F80.0°F+0.6°RQC00665693
2022Sep76.0°F79.4°F-3.4°RQC00665908
2022Oct74.7°F78.6°F-3.9°RQC00665908
2022Nov78.3°F77.1°F+1.2°RQC00665693
2022Dec75.3°F74.5°F+0.8°RQC00665693
2023Jan75.1°F73.3°F+1.8°RQC00665693
2023Feb74.6°F73.8°F+0.7°RQC00665693
2023Mar75.6°F74.7°F+0.9°RQC00665693
2023Apr77.2°F76.4°F+0.8°RQC00665693
2023May80.7°F78.7°F+2.0°RQC00665693
2023Jun82.9°F80.1°F+2.8°RQC00665693
2023Jul82.4°F80.2°F+2.2°RQC00665693
2023Aug82.3°F80.0°F+2.4°RQC00665097
2023Sep82.9°F79.4°F+3.4°RQC00665693
2023Oct82.5°F78.6°F+3.9°RQC00665693
2023Nov80.2°F77.1°F+3.1°RQC00665693
2023Dec77.1°F74.5°F+2.6°RQC00665693

Showing 884 of 884 records. = gap-filled data

This table shows raw (unsmoothed) monthly anomalies. The spiral applies a 12-month moving average to highlight long-term trends.

Methodology

Methodology How we calculate anomalies

1. Data Acquisition

We query NOAA's Global Summary of the Month (GSOM) database for the closest weather station with good historical coverage, starting from 1930.

Temperature metric: Monthly average temperature (TAVG). When TAVG is unavailable, we use (TMAX + TMIN) / 2 as a proxy.

2. Gap Filling

Some months may have missing data. We fill gaps using data from nearby weather stations (within ~200km).

115

Initial gaps

111

Filled

4

Unfillable

Fill stations: MAYAGUEZ CITY, PR US, COLOSO, PR US, SAN GERMAN 4 W, PR US, NARANJALES, PR US, MAGUEYES ISLAND, PR US, ADJUNTAS SUBSTATION, PR US, MARICAO 2 SSW, PR US

3. Baseline Calculation

The baseline is a 25-year window dynamically centered on the data's midpoint, requiring at least 90% coverage. If coverage is insufficient, the window shifts forward in 5-year increments until the threshold is met.

Period: 1974 – 1999 (100% coverage)

MonthBaselineYears
January73.3°F26/26
February73.8°F26/26
March74.7°F26/26
April76.4°F26/26
May78.7°F26/26
June80.1°F26/26
July80.2°F26/26
August80.0°F26/26
September79.4°F26/26
October78.6°F26/26
November77.1°F26/26
December74.5°F26/26

4. Anomaly Calculation

For each month, we calculate how far it deviates from the baseline. These are raw monthly anomalies.

Anomaly = Actual Temperature − Baseline[month]

5. Smoothing

The spiral visualization applies a 12-month centered moving average to reduce month-to-month noise and highlight multi-year warming trends. The spiral shows smoothed values, not raw anomalies.

6. Reading the Visualizations

Spiral: A 3D helix where each loop represents one year. The radius indicates the smoothed temperature anomaly, and colors range from blue (cold) to red (warm). The top view shows the annual cycle, while the side view shows time progression.

Stripes: Each stripe represents one year's average anomaly (the mean of all monthly anomalies for that year). No additional smoothing is applied; yearly aggregation naturally reduces noise.

Color scale: Color bounds are set to the 5th and 95th percentile of anomalies to avoid outlier washout, with a neutral zone of approximately ±0.1°C.

7. Data Quality Notes

Time of Observation Bias (TOBS)

Early cooperative weather stations typically read their min/max thermometers in the afternoon. This meant a single hot afternoon's peak temperature could be counted in two consecutive daily readings, inflating monthly maximums.

Between the 1950s and 1980s, most stations switched to morning or midnight observation times. This eliminated the warm bias but introduced a slight cool bias during the transition.

As a result, early decades in our data may read slightly warmer than they actually were, and the transition period may show an artificial cooling dip. Neither reflects actual temperature change. We use raw GSOM data without TOBS adjustments (NOAA's adjusted products like nClimDiv correct for this, but our station-level data does not).

Frequently Asked Questions

Is Lajas, Puerto Rico getting warmer?

Based on 74+ years of NOAA temperature records, Lajas has warmed at a rate of approximately 0.25°F per decade. This trend is calculated from monthly temperature anomalies relative to the location's historical baseline period.

What was the warmest year on record in Lajas?

The warmest year on record in Lajas was 2016, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Lajas come from?

Data comes from the LAJAS SUBSTATION, PR US weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 74+ years of temperature observations used to build Lajas's climate profile.

How are the climate visualizations for Lajas created?

Three visualizations are generated from Lajas's NOAA data: a climate spiral showing monthly temperature anomalies as concentric rings (inspired by NASA), warming stripes where each vertical stripe represents one year's temperature anomaly, and a linear trend chart showing the long-term trajectory.

Can I download Lajas's temperature data?

Yes. The interactive data table on this page shows every monthly temperature reading in Lajas's record. You can filter by decade and download the complete dataset as a CSV file for your own analysis.

Wear Lajas's Climate Story

These visualizations are printed on demand using Lajas's actual NOAA data. Every purchase plants a tree.

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