Climate Change in Santa Isabel, Puerto Rico

96+ years of recorded temperature data show Santa Isabel is changing.

Based on our analysis of 96 years of temperature data near Santa Isabel, PR, this area shows relatively stable temperatures of approximately -0.1°F per decade. 3 of the last 10 years recorded above-average temperatures, and 1998 was the warmest year on record at +2.5°F above the historical baseline.

Key Climate Facts

Rate of Change

-0.1°F

per decade

Warmest Year

1998

+2.5°F anomaly

Recent Warm Years

3 / 10

above-average years

Decade Shift

-1.4°F

2020s vs 1930s

Compared to the National Average

Santa Isabel is warming 0.1°F/decade slower than the national average.

National: +0.20°F/decade
Santa Isabel: -0.08°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 Santa Isabel's long-term warming trend.

Temperature anomaly spiral for Santa Isabel, Puerto Rico
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Santa Isabel, 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 Santa Isabel, Puerto Rico
Warming stripes: each stripe is one year of average temperature anomaly for Santa Isabel, PR.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of -0.08°F per decade quantifies the rate of change.

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

Temperature by Decade

1930s
-0.16°F
1940s
+1.09°F
1950s
-0.83°F
1960s
+0.49°F
1970s
-0.51°F
1980s
+0.14°F
1990s
+1.13°F
2000s
+1.15°F
2010s
-1.42°F
2020s
-1.47°F

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

Anomaly Scale

-3.4°F Colder Normal +2.7°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 Santa Isabel, PR. Filter by decade or download as CSV.

Data Sources & Audit

Station
PONCE 4 E, PR US
Distance
9.2 mi
Coverage
82%
Records
955
Range
1930-01 – 2026-01
Gap-filled
194 from 7 stations
Full Data Audit 1,149 records
YearMonthTempBaselineAnomalySourceGap
1930Jan75.2°F76.0°F-0.8°RQC00667292
1930Feb74.5°F76.0°F-1.6°RQC00667292
1930Mar75.9°F76.4°F-0.5°RQC00667292
1930Apr77.6°F77.9°F-0.3°RQC00667292
1930May79.8°F79.6°F+0.1°RQC00667292
1930Jun81.4°F80.7°F+0.7°RQC00667292
1930Jul81.7°F81.0°F+0.6°RQC00667292
1930Aug82.3°F81.6°F+0.7°RQC00667292
1930Sep81.6°F80.9°F+0.7°RQC00667292
1930Oct81.3°F80.1°F+1.2°RQC00667292
1930Nov79.1°F78.6°F+0.6°RQC00667292
1930Dec78.9°F76.5°F+2.4°RQC00667292
1931Jan76.8°F76.0°F+0.8°RQC00667292
1931Feb75.4°F76.0°F-0.6°RQC00667292
1931Mar78.6°F76.4°F+2.2°RQC00667292
1931Apr79.2°F77.9°F+1.3°RQC00667292
1931May81.1°F79.6°F+1.5°RQC00667292
1931Jun81.2°F80.7°F+0.5°RQC00667292
1931Jul81.9°F81.0°F+0.9°RQC00667292
1931Aug82.2°F81.6°F+0.6°RQC00667292
1931Sep80.8°F80.9°F-0.1°RQC00667292
1931Oct81.6°F80.1°F+1.5°RQC00667292
1931Nov78.8°F78.6°F+0.2°RQC00667292
1931Dec76.9°F76.5°F+0.4°RQC00667292
1932Jan75.9°F76.0°F-0.1°RQC00667292
1932Feb74.8°F76.0°F-1.3°RQC00667292
1932Mar77.1°F76.4°F+0.7°RQC00667292
1932Apr79.0°F77.9°F+1.1°RQC00667292
1932May80.0°F79.6°F+0.3°RQC00667292
1932Jun81.4°F80.7°F+0.7°RQC00667292
1932Jul81.2°F81.0°F+0.2°RQC00667292
1932Aug81.9°F81.6°F+0.2°RQC00667292
1932Sep82.0°F80.9°F+1.1°RQC00667292
1932Oct81.1°F80.1°F+1.0°RQC00667292
1932Nov79.7°F78.6°F+1.1°RQC00667292
1932Dec75.8°F76.5°F-0.7°RQC00667292
1933Jan74.2°F76.0°F-1.8°RQC00667292
1933Feb73.1°F76.0°F-2.9°RQC00667292
1933Mar75.5°F76.4°F-0.9°RQC00667292
1933Apr76.7°F77.9°F-1.3°RQC00667292
1933May78.1°F79.6°F-1.6°RQC00667292
1933Jun79.7°F80.7°F-1.0°RQC00667292
1933Jul80.6°F81.0°F-0.4°RQC00667292
1933Aug80.5°F81.6°F-1.1°RQC00667292
1933Sep79.0°F80.9°F-2.0°RQC00667292
1933Oct79.5°F80.1°F-0.7°RQC00667292
1933Nov77.6°F78.6°F-0.9°RQC00667292
1933Dec76.0°F76.5°F-0.5°RQC00667292
1934Jan73.7°F76.0°F-2.2°RQC00667292
1934Feb74.5°F76.0°F-1.6°RQC00667292
1934Mar74.3°F76.4°F-2.1°RQC00667292
1934Apr76.0°F77.9°F-1.9°RQC00667292
1934May78.2°F79.6°F-1.4°RQC00667292
1934Jun78.7°F80.7°F-2.0°RQC00667292
1934Jul80.8°F81.0°F-0.3°RQC00667292
1934Aug80.6°F81.6°F-1.0°RQC00667292
1934Sep80.4°F80.9°F-0.5°RQC00667292
1934Oct80.0°F80.1°F-0.2°RQC00667292
1934Nov78.3°F78.6°F-0.3°RQC00667292
1934Dec76.6°F76.5°F+0.1°RQC00667292
1935Jan74.6°F76.0°F-1.4°RQC00667292
1935Feb74.5°F76.0°F-1.6°RQC00667292
1935Mar74.5°F76.4°F-2.0°RQC00667292
1935Apr77.2°F77.9°F-0.8°RQC00667292
1935May77.6°F79.6°F-2.0°RQC00667292
1935Jun79.7°F80.7°F-1.0°RQC00667292
1935Jul81.2°F81.0°F+0.2°RQC00667292
1935Aug81.4°F81.6°F-0.2°RQC00667292
1935Sep81.5°F80.9°F+0.6°RQC00667292
1935Oct79.7°F80.1°F-0.4°RQC00667292
1935Nov78.2°F78.6°F-0.4°RQC00667292
1935Dec77.4°F76.5°F+0.9°RQC00667292
1936Jan76.2°F76.0°F+0.3°RQC00667292
1936Feb75.7°F76.0°F-0.3°RQC00667292
1936Mar76.1°F76.4°F-0.3°RQC00667292
1936Apr78.9°F77.9°F+0.9°RQC00667292
1936May80.3°F79.6°F+0.7°RQC00667292
1936Jun81.7°F80.7°F+1.0°RQC00667292
1936Jul81.4°F81.0°F+0.3°RQC00667292
1936Aug80.9°F81.6°F-0.8°RQC00667292
1936Sep81.0°F80.9°F+0.1°RQC00667292
1936Oct79.9°F80.1°F-0.2°RQC00667292
1936Nov78.1°F78.6°F-0.4°RQC00667292
1936Dec75.7°F76.5°F-0.9°RQC00667292
1937Jan75.2°F76.0°F-0.8°RQC00667292
1937Feb74.4°F76.0°F-1.6°RQC00667292
1937Mar76.5°F76.4°F+0.1°RQC00667292
1937Apr78.0°F77.9°F+0.1°RQC00667292
1937May80.3°F79.6°F+0.6°RQC00667292
1937Jun80.9°F80.7°F+0.2°RQC00667292
1937Jul82.0°F81.0°F+1.0°RQC00667292
1937Aug81.1°F81.6°F-0.5°RQC00667292
1937Sep81.5°F80.9°F+0.6°RQC00667292
1937Oct80.1°F80.1°F-0.1°RQC00667292
1937Nov80.6°F78.6°F+2.0°RQC00667292
1937Dec77.2°F76.5°F+0.6°RQC00667292
1938Jan75.5°F76.0°F-0.5°RQC00667292
1938Feb74.5°F76.0°F-1.5°RQC00667292
1938Mar75.0°F76.4°F-1.4°RQC00667292
1938Apr75.3°F77.9°F-2.6°RQC00667292
1938May79.2°F79.6°F-0.4°RQC00667292
1938Jun80.5°F80.7°F-0.2°RQC00667292
1938Jul80.9°F81.0°F-0.1°RQC00667292
1938Aug82.3°F81.6°F+0.7°RQC00667292
1938Sep81.2°F80.9°F+0.3°RQC00667292
1938Oct81.2°F80.1°F+1.0°RQC00667292
1938Nov78.2°F78.6°F-0.3°RQC00667292
1938Dec77.2°F76.5°F+0.6°RQC00667292
1939Jan74.8°F76.0°F-1.2°RQC00667292
1939Feb74.5°F76.0°F-1.6°RQC00667292
1939Mar75.5°F76.4°F-1.0°RQC00667292
1939Apr77.0°F77.9°F-0.9°RQC00667292
1939May78.5°F79.6°F-1.1°RQC00667292
1939Jun80.2°F80.7°F-0.5°RQC00667292
1939Jul81.4°F81.0°F+0.3°RQC00667292
1939Aug81.7°F81.6°F+0.0°RQC00667292
1939Sep82.2°F80.9°F+1.3°RQC00667292
1939Oct82.2°F80.1°F+2.0°RQC00667292
1939Nov80.9°F78.6°F+2.4°RQC00667292
1939Dec78.3°F76.5°F+1.8°RQC00667292
1940Jan77.5°F76.0°F+1.5°RQC00667292
1940Feb78.0°F76.0°F+1.9°RQC00667292
1940Mar78.1°F76.4°F+1.7°RQC00667292
1940Apr79.7°F77.9°F+1.7°RQC00667292
1940May80.5°F79.6°F+0.9°RQC00667292
1940Jun81.7°F80.7°F+1.0°RQC00667292
1940Jul82.2°F81.0°F+1.1°RQC00667292
1940Aug83.4°F81.6°F+1.8°RQC00667292
1940Sep82.8°F80.9°F+1.9°RQC00667292
1940Oct82.2°F80.1°F+2.1°RQC00667292
1940Nov80.5°F78.6°F+2.0°RQC00667292
1940Dec79.4°F76.5°F+2.9°RQC00667292
1941Jan78.4°F76.0°F+2.4°RQC00667292
1941Feb79.7°F76.0°F+3.7°RQC00667292
1941Mar80.6°F76.4°F+4.1°RQC00667292
1941Apr81.0°F77.9°F+3.0°RQC00667292
1941May81.6°F79.6°F+2.0°RQC00667292
1941Jun82.0°F80.7°F+1.3°RQC00667292
1941Jul81.9°F81.0°F+0.9°RQC00667292
1941Aug82.7°F81.6°F+1.1°RQC00667292
1941Sep82.2°F80.9°F+1.3°RQC00667292
1941Oct81.8°F80.1°F+1.7°RQC00667292
1941Nov81.4°F78.6°F+2.8°RQC00667292
1941Dec80.0°F76.5°F+3.5°RQC00667292
1942Jan78.4°F76.0°F+2.5°RQC00667292
1942Feb77.6°F76.0°F+1.6°RQC00667292
1942Mar79.3°F76.4°F+2.9°RQC00667292
1942Apr79.5°F77.9°F+1.6°RQC00667292
1942May80.6°F79.6°F+0.9°RQC00667292
1942Jun81.8°F80.7°F+1.1°RQC00667292
1942Jul82.7°F81.0°F+1.6°RQC00667292
1942Aug82.0°F81.6°F+0.4°RQC00667292
1942Sep82.1°F80.9°F+1.2°RQC00667292
1942Oct81.7°F80.1°F+1.5°RQC00667292
1942Nov80.4°F78.6°F+1.8°RQC00667292
1942Dec80.1°F76.5°F+3.6°RQC00667292
1943Jan77.6°F76.0°F+1.7°RQC00667292
1943Feb77.3°F76.0°F+1.3°RQC00667292
1943Mar76.9°F76.4°F+0.5°RQC00667292
1943Apr78.6°F77.9°F+0.7°RQC00667292
1943May78.6°F79.6°F-1.0°RQC00667292
1943Jun79.7°F80.7°F-1.0°RQC00667292
1943Jul79.8°F81.0°F-1.3°RQC00667292
1943Aug81.4°F81.6°F-0.2°RQC00667292
1943Sep81.8°F80.9°F+0.9°RQC00667292
1943Oct80.7°F80.1°F+0.6°RQC00667292
1943Nov79.9°F78.6°F+1.3°RQC00667292
1943Dec78.5°F76.5°F+2.0°RQC00667292
1944Jan76.9°F76.0°F+0.9°RQC00667292
1944Feb75.9°F76.0°F-0.2°RQC00667292
1944Mar77.1°F76.4°F+0.7°RQC00667292
1944Apr78.9°F77.9°F+1.0°RQC00667292
1944May79.3°F79.6°F-0.3°RQC00667292
1944Jun82.0°F80.7°F+1.3°RQC00667292
1944Jul82.3°F81.0°F+1.3°RQC00667292
1944Aug82.6°F81.6°F+1.0°RQC00667292
1944Sep81.7°F80.9°F+0.8°RQC00667292
1944Oct81.8°F80.1°F+1.6°RQC00667292
1944Nov79.2°F78.6°F+0.6°RQC00667292
1944Dec78.0°F76.5°F+1.5°RQC00667292
1945Jan75.6°F76.0°F-0.4°RQC00667292
1945Feb76.6°F76.0°F+0.6°RQC00667292
1945Mar76.0°F76.4°F-0.4°RQC00667292
1945Apr77.5°F77.9°F-0.5°RQC00667292
1945May79.0°F79.6°F-0.6°RQC00667292
1945Jun81.1°F80.7°F+0.4°RQC00667292
1945Jul82.4°F81.0°F+1.3°RQC00667292
1945Aug81.7°F81.6°F+0.0°RQC00667292
1945Sep81.5°F80.9°F+0.6°RQC00667292
1945Oct81.1°F80.1°F+0.9°RQC00667292
1945Nov79.6°F78.6°F+1.1°RQC00660147
1945Dec78.4°F76.5°F+1.9°RQC00660147
1946Jan77.2°F76.0°F+1.2°RQC00667292
1946Feb76.6°F76.0°F+0.5°RQC00667292
1946Mar77.3°F76.4°F+0.8°RQC00667292
1946Apr78.2°F77.9°F+0.2°RQC00667292
1946May80.5°F79.6°F+0.9°RQC00667292
1946Jun81.3°F80.7°F+0.6°RQC00667292
1946Jul81.8°F81.0°F+0.8°RQC00667292
1946Aug81.6°F81.6°F+0.0°RQC00667292
1946Sep81.1°F80.9°F+0.2°RQC00667292
1946Oct81.2°F80.1°F+1.0°RQC00667292
1946Nov79.5°F78.6°F+0.9°RQC00667292
1946Dec77.8°F76.5°F+1.2°RQC00667292
1947Jan77.7°F76.0°F+1.7°RQC00667292
1947Feb78.1°F76.0°F+2.1°RQC00667292
1947Mar78.9°F76.4°F+2.4°RQC00660147
1947Apr79.2°F77.9°F+1.3°RQC00665020
1947May80.6°F79.6°F+0.9°RQC00660147
1947Jun82.1°F80.7°F+1.4°RQC00667292
1947Jul83.3°F81.0°F+2.2°RQC00667292
1947Aug82.5°F81.6°F+0.8°RQC00667292
1947Sep82.7°F80.9°F+1.8°RQC00667292
1947Oct82.7°F80.1°F+2.6°RQC00667292
1947Nov80.3°F78.6°F+1.7°RQC00667292
1947Dec78.1°F76.5°F+1.6°RQC00667292
1948Jan77.0°F76.0°F+1.0°RQC00667292
1948Feb77.3°F76.0°F+1.3°RQC00667292
1948Mar78.5°F76.4°F+2.1°RQC00667292
1948Apr78.0°F77.9°F+0.1°RQC00667292
1948May82.5°F79.6°F+2.9°RQC00667292
1948Jun81.0°F80.7°F+0.3°RQC00665020
1948Jul81.3°F81.0°F+0.3°RQC00665020
1948Aug82.6°F81.6°F+1.0°RQC00667292
1948Sep80.2°F80.9°F-0.8°RQC00665020
1948Oct80.7°F80.1°F+0.6°RQC00667292
1948Nov81.9°F78.6°F+3.4°RQC00667292
1948Dec76.8°F76.5°F+0.3°RQC00665020
1949Jan75.2°F76.0°F-0.8°RQC00667292
1949Feb74.0°F76.0°F-2.0°RQC00667292
1949Mar79.2°F76.4°F+2.8°RQC00660147
1949Apr77.5°F77.9°F-0.5°RQC00660147
1949May78.9°F79.6°F-0.7°RQC00667292
1949Jun79.9°F80.7°F-0.8°RQC00667292
1949Jul84.4°F81.0°F+3.4°RQC00660147
1949Aug81.6°F81.6°F-0.1°RQC00660147
1949Sep80.5°F80.9°F-0.4°RQC00667292
1949Oct80.2°F80.1°F+0.1°RQC00667292
1949Nov78.0°F78.6°F-0.6°RQC00667292
1949Dec76.4°F76.5°F-0.1°RQC00667292
1950Jan72.1°F76.0°F-3.9°RQC00665020
1950Feb72.7°F76.0°F-3.3°RQC00665020
1950Mar73.4°F76.4°F-3.0°RQC00665020
1950Apr72.9°F77.9°F-5.0°RQC00660147
1950May75.6°F79.6°F-4.0°RQC00665020
1950Jun77.2°F80.7°F-3.5°RQC00660147
1950Jul77.6°F81.0°F-3.4°RQC00660147
1950Aug78.3°F81.6°F-3.4°RQC00660147
1950Sep78.7°F80.9°F-2.2°RQC00665020
1950Oct77.9°F80.1°F-2.2°RQC00665020
1950Nov76.0°F78.6°F-2.5°RQC00665020
1950Dec74.1°F76.5°F-2.4°RQC00665020
1951Jan72.5°F76.0°F-3.5°RQC00665020
1951Feb71.3°F76.0°F-4.8°RQC00665020
1951Mar72.4°F76.4°F-4.0°RQW00011637
1951Apr76.6°F77.9°F-1.3°RQW00011637
1951May78.9°F79.6°F-0.7°RQW00011637
1951Jun79.7°F80.7°F-1.0°RQW00011637
1951Jul80.3°F81.0°F-0.8°RQW00011637
1951Aug80.5°F81.6°F-1.2°RQW00011637
1951Sep79.9°F80.9°F-1.1°RQW00011637
1951Oct79.7°F80.1°F-0.4°RQW00011637
1951Nov78.3°F78.6°F-0.2°RQW00011637
1951Dec76.3°F76.5°F-0.2°RQW00011637
1952Jan74.0°F76.0°F-2.0°RQW00011637
1952Feb74.0°F76.0°F-2.0°RQW00011637
1952Mar75.2°F76.4°F-1.3°RQW00011637
1952Apr76.9°F77.9°F-1.1°RQW00011637
1952May78.7°F79.6°F-0.9°RQW00011637
1952Jun80.0°F80.7°F-0.7°RQW00011637
1952Jul79.9°F81.0°F-1.1°RQW00011637
1952Aug80.6°F81.6°F-1.1°RQW00011637
1952Sep79.5°F80.9°F-1.4°RQW00011637
1952Oct79.8°F80.1°F-0.4°RQW00011637
1952Nov77.5°F78.6°F-1.1°RQW00011637
1952Dec75.0°F76.5°F-1.5°RQW00011637
1953Jan74.4°F76.0°F-1.6°RQW00011637
1953Feb74.2°F76.0°F-1.9°RQW00011637
1953Mar74.4°F76.4°F-2.0°RQW00011637
1953Apr76.5°F77.9°F-1.4°RQW00011637
1953May78.3°F79.6°F-1.3°RQW00011637
1953Jun79.5°F80.7°F-1.2°RQW00011637
1953Jul80.2°F81.0°F-0.8°RQW00011637
1953Aug80.1°F81.6°F-1.5°RQW00011637
1953Sep80.5°F80.9°F-0.4°RQW00011637
1953Oct79.5°F80.1°F-0.6°RQW00011637
1953Nov78.4°F78.6°F-0.1°RQW00011637
1953Dec77.2°F76.5°F+0.7°RQW00011637
1954Jan75.2°F76.0°F-0.8°RQW00011637
1954Feb74.7°F76.0°F-1.4°RQW00011637
1954Mar75.6°F76.4°F-0.8°RQW00011637
1954Apr76.9°F77.9°F-1.0°RQC00667292
1954May79.6°F79.6°F-0.1°RQC00667292
1954Jun80.4°F80.7°F-0.3°RQC00667292
1954Jul80.6°F81.0°F-0.4°RQC00667292
1954Aug81.6°F81.6°F+0.0°RQC00667292
1954Sep80.7°F80.9°F-0.2°RQC00667292
1954Oct79.2°F80.1°F-1.0°RQC00667292
1954Nov78.4°F78.6°F-0.2°RQC00667292
1954Dec76.3°F76.5°F-0.2°RQC00667292
1955Jan71.1°F76.0°F-4.9°RQC00665020
1955Feb74.9°F76.0°F-1.1°RQC00667292
1955Mar74.1°F76.4°F-2.3°RQC00667292
1955Apr76.1°F77.9°F-1.8°RQC00667292
1955May80.0°F79.6°F+0.4°RQC00667292
1955Jun80.8°F80.7°F+0.1°RQC00667292
1955Jul81.0°F81.0°F-0.1°RQC00667292
1955Aug81.7°F81.6°F+0.0°RQC00667292
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1983Nov78.1°F78.6°F-0.5°RQC00667292
1983Dec77.1°F76.5°F+0.6°RQC00667292
1984Jan77.1°F76.0°F+1.1°RQC00667292
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1984Mar76.4°F76.4°F-0.1°RQC00667292
1984Apr78.0°F77.9°F+0.1°RQC00667292
1984May74.9°F79.6°F-4.7°RQC00660152
1984Jun80.9°F80.7°F+0.2°RQC00667292
1984Jul76.2°F81.0°F-4.8°RQC00660152
1984Aug81.3°F81.6°F-0.3°RQC00667292
1984Sep79.8°F80.9°F-1.1°RQC00667292
1984Oct78.9°F80.1°F-1.2°RQC00667292
1984Nov77.4°F78.6°F-1.2°RQC00667292
1984Dec75.0°F76.5°F-1.5°RQC00667292
1985Jan74.0°F76.0°F-2.0°RQC00667292
1985Feb75.5°F76.0°F-0.5°RQC00667292
1985Mar75.5°F76.4°F-1.0°RQC00667292
1985Apr76.4°F77.9°F-1.5°RQC00667292
1985May78.9°F79.6°F-0.8°RQC00667292
1985Jun80.5°F80.7°F-0.2°RQC00667292
1985Jul82.4°F81.0°F+1.4°RQC00667292
1985Aug82.2°F81.6°F+0.6°RQC00667292
1985Sep80.3°F80.9°F-0.7°RQC00667292
1985Oct79.0°F80.1°F-1.1°RQC00667292
1985Nov78.0°F78.6°F-0.6°RQC00667292
1985Dec76.5°F76.5°F-0.1°RQC00667292
1986Jan75.4°F76.0°F-0.6°RQC00667292
1986Feb74.6°F76.0°F-1.4°RQC00667292
1986Mar76.1°F76.4°F-0.3°RQC00667292
1986Apr78.1°F77.9°F+0.1°RQC00667292
1986May78.7°F79.6°F-0.9°RQC00667292
1986Jun80.4°F80.7°F-0.3°RQC00667292
1986Jul81.4°F81.0°F+0.4°RQC00667292
1986Aug82.1°F81.6°F+0.5°RQC00667292
1986Sep81.2°F80.9°F+0.2°RQC00667292
1986Oct80.2°F80.1°F+0.0°RQC00667292
1986Nov78.2°F78.6°F-0.4°RQC00667292
1986Dec76.3°F76.5°F-0.2°RQC00667292
1987Jan75.7°F76.0°F-0.3°RQC00667292
1987Feb75.7°F76.0°F-0.3°RQC00667292
1987Mar76.3°F76.4°F-0.1°RQC00667292
1987Apr80.0°F77.9°F+2.1°RQC00667292
1987May80.2°F79.6°F+0.6°RQC00667292
1987Jun80.7°F80.7°F+0.0°RQC00667292
1987Jul81.9°F81.0°F+0.8°RQC00667292
1987Aug83.0°F81.6°F+1.4°RQC00667292
1987Sep82.3°F80.9°F+1.3°RQC00667292
1987Oct80.9°F80.1°F+0.8°RQC00667292
1987Nov78.6°F78.6°F+0.0°RQC00667292
1987Dec77.8°F76.5°F+1.3°RQC00667292
1988Jan75.5°F76.0°F-0.5°RQC00667292
1988Feb76.1°F76.0°F+0.1°RQC00667292
1988Mar75.6°F76.4°F-0.8°RQC00667292
1988Apr78.5°F77.9°F+0.6°RQC00667292
1988May80.4°F79.6°F+0.8°RQC00667292
1988Jun82.0°F80.7°F+1.3°RQC00667292
1988Jul81.6°F81.0°F+0.6°RQC00667292
1988Aug81.6°F81.6°F-0.1°RQC00667292
1988Sep80.9°F80.9°F+0.0°RQC00667292
1988Oct80.9°F80.1°F+0.7°RQC00667292
1988Nov78.7°F78.6°F+0.1°RQC00667292
1988Dec76.1°F76.5°F-0.4°RQC00667292
1989Jan75.3°F76.0°F-0.7°RQC00667292
1989Feb75.8°F76.0°F-0.3°RQC00667292
1989Mar74.8°F76.4°F-1.6°RQC00667292
1989Apr76.0°F77.9°F-2.0°RQC00667292
1989May79.0°F79.6°F-0.6°RQC00667292
1989Jun80.3°F80.7°F-0.4°RQC00667292
1989Jul81.0°F81.0°F+0.0°RQC00667292
1989Aug81.6°F81.6°F-0.1°RQC00667292
1989Sep81.1°F80.9°F+0.1°RQC00667292
1989Oct79.8°F80.1°F-0.3°RQC00667292
1989Nov79.3°F78.6°F+0.7°RQC00667292
1989Dec77.7°F76.5°F+1.2°RQC00667292
1990Jan78.2°F76.0°F+2.2°RQC00667292
1990Feb76.0°F76.0°F-0.1°RQC00667292
1990Mar76.7°F76.4°F+0.3°RQC00667292
1990Apr77.8°F77.9°F-0.1°RQC00667292
1990May81.1°F79.6°F+1.4°RQC00667292
1990Jun82.2°F80.7°F+1.5°RQC00667292
1990Jul82.0°F81.0°F+0.9°RQC00667292
1990Aug83.1°F81.6°F+1.5°RQC00667292
1990Sep81.6°F80.9°F+0.6°RQC00667292
1990Oct79.8°F80.1°F-0.4°RQC00667292
1990Nov79.7°F78.6°F+1.1°RQC00667292
1990Dec76.5°F76.5°F+0.0°RQC00667292
1991Jan77.4°F76.0°F+1.4°RQC00667292
1991Feb76.9°F76.0°F+0.8°RQC00667292
1991Mar76.9°F76.4°F+0.5°RQC00667292
1991Apr78.0°F77.9°F+0.0°RQC00667292
1991May80.3°F79.6°F+0.6°RQC00667292
1991Jun82.2°F80.7°F+1.5°RQC00667292
1991Jul81.7°F81.0°F+0.6°RQC00667292
1991Aug82.3°F81.6°F+0.6°RQC00667292
1991Sep81.9°F80.9°F+1.0°RQC00667292
1991Oct81.1°F80.1°F+0.9°RQC00667292
1991Nov79.7°F78.6°F+1.1°RQC00667292
1991Dec76.0°F76.5°F-0.5°RQC00667292
1992Jan75.6°F76.0°F-0.4°RQC00667292
1992Feb76.6°F76.0°F+0.5°RQC00667292
1992Mar76.7°F76.4°F+0.3°RQC00667292
1992Apr78.5°F77.9°F+0.6°RQC00667292
1992May79.1°F79.6°F-0.6°RQC00667292
1992Jun81.0°F80.7°F+0.3°RQC00667292
1992Jul82.1°F81.0°F+1.1°RQC00667292
1992Aug81.3°F81.6°F-0.4°RQC00667292
1992Sep81.6°F80.9°F+0.7°RQC00667292
1992Oct80.4°F80.1°F+0.2°RQC00667292
1992Nov78.7°F78.6°F+0.1°RQC00667292
1992Dec77.1°F76.5°F+0.5°RQC00667292
1993Jan75.4°F76.0°F-0.6°RQC00667292
1993Feb75.2°F76.0°F-0.8°RQC00667292
1993Mar76.0°F76.4°F-0.4°RQC00667292
1993Apr79.1°F77.9°F+1.2°RQC00667292
1993May79.8°F79.6°F+0.1°RQC00667292
1993Jun81.4°F80.7°F+0.7°RQC00667292
1993Jul81.2°F81.0°F+0.2°RQC00667292
1993Aug82.3°F81.6°F+0.7°RQC00667292
1993Sep82.2°F80.9°F+1.3°RQC00667292
1993Oct81.1°F80.1°F+0.9°RQC00667292
1993Nov80.0°F78.6°F+1.4°RQC00667292
1993Dec78.0°F76.5°F+1.5°RQC00667292
1994Jan77.8°F76.0°F+1.8°RQC00667292
1994Feb77.5°F76.0°F+1.4°RQC00667292
1994Mar77.7°F76.4°F+1.3°RQC00667292
1994Apr79.0°F77.9°F+1.1°RQC00667292
1994May81.5°F79.6°F+1.9°RQC00667292
1994Jun82.5°F80.7°F+1.8°RQC00667292
1994Jul82.7°F81.0°F+1.6°RQC00667292
1994Aug82.3°F81.6°F+0.6°RQC00667292
1994Sep81.9°F80.9°F+1.0°RQC00667292
1994Oct80.8°F80.1°F+0.7°RQC00667292
1994Nov80.0°F78.6°F+1.5°RQC00667292
1994Dec78.2°F76.5°F+1.7°RQC00667292
1995Jan77.1°F76.0°F+1.1°RQC00667292
1995Feb77.6°F76.0°F+1.6°RQC00667292
1995Mar76.2°F76.4°F-0.2°RQC00667292
1995Apr78.2°F77.9°F+0.3°RQC00667292
1995May81.0°F79.6°F+1.4°RQC00667292
1995Jun83.0°F80.7°F+2.3°RQC00667292
1995Jul83.8°F81.0°F+2.8°RQC00667292
1995Aug83.0°F81.6°F+1.4°RQC00667292
1995Sep81.6°F80.9°F+0.7°RQC00667292
1995Oct81.7°F80.1°F+1.5°RQC00667292
1995Nov80.5°F78.6°F+1.9°RQC00667292
1995Dec78.3°F76.5°F+1.7°RQC00667292
1996Jan77.4°F76.0°F+1.4°RQC00667292
1996Feb77.4°F76.0°F+1.3°RQC00667292
1996Mar77.8°F76.4°F+1.3°RQC00667292
1996Apr78.9°F77.9°F+0.9°RQC00667292
1996May80.0°F79.6°F+0.4°RQC00667292
1996Jun81.6°F80.7°F+0.9°RQC00667292
1996Jul82.6°F81.0°F+1.5°RQC00667292
1996Aug82.3°F81.6°F+0.6°RQC00667292
1996Sep81.7°F80.9°F+0.7°RQC00667292
1996Oct81.4°F80.1°F+1.2°RQC00667292
1996Nov79.3°F78.6°F+0.7°RQC00667292
1996Dec76.0°F76.5°F-0.5°RQC00667292
1997Jan76.6°F76.0°F+0.6°RQC00667292
1997Feb78.6°F76.0°F+2.6°RQC00667292
1997Mar77.7°F76.4°F+1.3°RQC00667292
1997Apr78.5°F77.9°F+0.6°RQC00667292
1997May81.7°F79.6°F+2.1°RQC00667292
1997Jun84.0°F80.7°F+3.3°RQC00667292
1997Jul83.3°F81.0°F+2.3°RQC00667292
1997Aug83.4°F81.6°F+1.8°RQC00667292
1997Sep77.5°F80.9°F-3.4°RQC00660152
1997Oct81.5°F80.1°F+1.3°RQC00667292
1997Nov81.6°F78.6°F+3.1°RQC00667292
1997Dec80.4°F76.5°F+3.8°RQC00667292
1998Jan79.8°F76.0°F+3.8°RQC00667292
1998Feb78.4°F76.0°F+2.3°RQC00667292
1998Mar79.2°F76.4°F+2.8°RQC00667292
1998Apr79.4°F77.9°F+1.5°RQC00667292
1998May82.0°F79.6°F+2.3°RQC00667292
1998Jun83.3°F80.7°F+2.6°RQC00667292
1998Jul83.4°F81.0°F+2.4°RQC00667292
1998Aug83.2°F81.6°F+1.6°RQC00667292
1998Sep83.0°F80.9°F+2.0°RQC00667292
1998Oct82.2°F80.1°F+2.1°RQC00667292
1998Nov81.3°F78.6°F+2.7°RQC00667292
1998Dec80.5°F76.5°F+4.0°RQC00667292
1999Jan79.1°F76.0°F+3.1°RQC00667292
1999Feb76.0°F76.0°F+0.0°RQC00667292
1999Mar76.9°F76.4°F+0.5°RQC00667292
1999Apr79.7°F77.9°F+1.7°RQC00667292
1999May81.4°F79.6°F+1.8°RQC00667292
1999Jun82.1°F80.7°F+1.4°RQC00667292
1999Jul81.2°F81.0°F+0.2°RQC00667292
1999Aug83.6°F81.6°F+2.0°RQC00667292
1999Sep82.0°F80.9°F+1.1°RQC00667292
1999Oct81.6°F80.1°F+1.5°RQC00667292
1999Nov80.4°F78.6°F+1.9°RQC00667292
1999Dec77.8°F76.5°F+1.3°RQC00667292
2000Jan76.0°F76.0°F+0.1°RQC00667292
2000Feb76.4°F76.0°F+0.3°RQC00667292
2000Mar74.9°F76.4°F-1.5°RQC00667292
2000Apr78.3°F77.9°F+0.3°RQC00667292
2000May79.1°F79.6°F-0.6°RQC00667292
2000Jun81.7°F80.7°F+1.0°RQC00667292
2000Jul81.1°F81.0°F+0.0°RQC00667292
2000Aug81.0°F81.6°F-0.6°RQC00667292
2000Sep81.4°F80.9°F+0.5°RQC00667292
2000Oct80.7°F80.1°F+0.6°RQC00667292
2000Nov79.4°F78.6°F+0.8°RQC00667292
2000Dec78.8°F76.5°F+2.3°RQC00667292
2001Jan76.8°F76.0°F+0.8°RQC00667292
2001Feb76.7°F76.0°F+0.7°RQC00667292
2001Mar77.4°F76.4°F+0.9°RQC00667292
2001Apr78.1°F77.9°F+0.2°RQC00667292
2001May79.7°F79.6°F+0.1°RQC00667292
2001Jun81.5°F80.7°F+0.8°RQC00667292
2001Jul82.2°F81.0°F+1.2°RQC00667292
2001Aug83.5°F81.6°F+1.9°RQC00667292
2001Sep82.2°F80.9°F+1.3°RQC00667292
2001Oct82.8°F80.1°F+2.7°RQC00667292
2001Nov80.3°F78.6°F+1.8°RQC00667292
2001Dec79.7°F76.5°F+3.1°RQC00667292
2002Jan79.0°F76.0°F+3.0°RQC00667292
2002Feb77.1°F76.0°F+1.0°RQC00667292
2002Mar77.9°F76.4°F+1.5°RQC00667292
2002Apr78.2°F77.9°F+0.2°RQC00667292
2002May80.5°F79.6°F+0.9°RQC00667292
2002Jun81.2°F80.7°F+0.5°RQC00667292
2002Jul82.8°F81.0°F+1.8°RQC00667292
2002Aug83.6°F81.6°F+2.0°RQC00667292
2002Sep83.4°F80.9°F+2.4°RQC00667292
2002Oct82.2°F80.1°F+2.0°RQC00667292
2002Nov81.2°F78.6°F+2.7°RQC00667292
2002Dec79.3°F76.5°F+2.8°RQC00667292
2003Jan78.7°F76.0°F+2.8°RQC00667292
2003Feb78.5°F76.0°F+2.4°RQC00667292
2003Mar79.1°F76.4°F+2.6°RQC00667292
2003Apr79.6°F77.9°F+1.7°RQC00667292
2003May81.1°F79.6°F+1.5°RQC00667292
2003Jun82.8°F80.7°F+2.1°RQC00667292
2003Jul83.4°F81.0°F+2.4°RQC00667292
2003Aug83.3°F81.6°F+1.7°RQC00667292
2003Sep82.9°F80.9°F+1.9°RQC00667292
2003Oct82.4°F80.1°F+2.3°RQC00667292
2003Nov79.9°F78.6°F+1.3°RQC00667292
2003Dec78.2°F76.5°F+1.7°RQC00667292
2004Jan76.0°F76.0°F+0.1°RQC00667292
2004Feb75.6°F76.0°F-0.5°RQC00667292
2004Mar77.0°F76.4°F+0.6°RQC00667292
2004Apr78.2°F77.9°F+0.3°RQC00667292
2004May80.3°F79.6°F+0.7°RQC00667292
2004Jun82.6°F80.7°F+1.9°RQC00667292
2004Jul83.0°F81.0°F+2.0°RQC00667292
2004Aug82.7°F81.6°F+1.1°RQC00667292
2004Sep81.7°F80.9°F+0.8°RQC00667292
2004Oct80.9°F80.1°F+0.7°RQC00667292
2004Nov78.7°F78.6°F+0.2°RQC00667292
2004Dec77.1°F76.5°F+0.6°RQC00667292
2005Jan76.7°F76.0°F+0.7°RQC00667292
2005Feb73.6°F76.0°F-2.4°RQC00667292
2005Mar78.0°F76.4°F+1.6°RQC00667292
2005Apr80.7°F77.9°F+2.8°RQC00667292
2005May80.6°F79.6°F+0.9°RQC00667292
2005Jun82.8°F80.7°F+2.1°RQC00667292
2005Jul82.0°F81.0°F+1.0°RQC00667292
2005Aug82.1°F81.6°F+0.4°RQC00667292
2005Sep83.2°F80.9°F+2.2°RQC00667292
2005Oct81.4°F80.1°F+1.2°RQC00667292
2005Nov75.7°F78.6°F-2.9°RQC00660152
2005Dec78.2°F76.5°F+1.7°RQC00667292
2006Jan77.9°F76.0°F+1.9°RQC00667292
2006Feb76.4°F76.0°F+0.4°RQC00667292
2006Mar77.1°F76.4°F+0.7°RQC00667292
2006Apr79.6°F77.9°F+1.6°RQC00667292
2006May81.6°F79.6°F+2.0°RQC00667292
2006Jun82.3°F80.7°F+1.6°RQC00667292
2006Jul82.1°F81.0°F+1.1°RQC00667292
2006Aug83.2°F81.6°F+1.6°RQC00667292
2006Sep83.5°F80.9°F+2.6°RQC00667292
2006Oct83.2°F80.1°F+3.0°RQC00667292
2006Nov81.1°F78.6°F+2.6°RQC00667292
2006Dec80.3°F76.5°F+3.7°RQC00667292
2007Jan78.5°F76.0°F+2.5°RQC00667292
2007Feb79.1°F76.0°F+3.1°RQC00667292
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2007Apr80.0°F77.9°F+2.1°RQC00667292
2007May82.3°F79.6°F+2.6°RQC00667292
2007Jun82.5°F80.7°F+1.8°RQC00667292
2007Jul83.0°F81.0°F+1.9°RQC00667292
2007Aug82.4°F81.6°F+0.8°RQC00667292
2007Sep81.6°F80.9°F+0.7°RQC00667292
2007Oct80.8°F80.1°F+0.7°RQC00667292
2007Nov80.0°F78.6°F+1.4°RQC00667292
2007Dec77.9°F76.5°F+1.3°RQC00667292
2008Jan76.2°F76.0°F+0.2°RQC00667292
2008Feb76.5°F76.0°F+0.5°RQC00667292
2008Mar76.0°F76.4°F-0.4°RQC00667292
2008Apr78.1°F77.9°F+0.1°RQC00667292
2008May80.2°F79.6°F+0.6°RQC00667292
2008Jun82.8°F80.7°F+2.1°RQC00667292
2008Jul83.2°F81.0°F+2.1°RQC00667292
2008Aug81.9°F81.6°F+0.2°RQC00667292
2008Sep80.4°F80.9°F-0.6°RQC00667292
2008Oct80.1°F80.1°F-0.1°RQC00667292
2008Nov78.7°F78.6°F+0.2°RQC00667292
2008Dec76.5°F76.5°F-0.1°RQC00667292
2009Jan77.0°F76.0°F+1.1°RQC00667292
2009Feb76.1°F76.0°F+0.0°RQC00667292
2009Mar75.0°F76.4°F-1.4°RQC00667292
2009Apr77.9°F77.9°F+0.0°RQC00667292
2009May78.7°F79.6°F-0.9°RQC00667292
2009Jun81.1°F80.7°F+0.4°RQC00667292
2009Jul83.4°F81.0°F+2.4°RQC00667292
2009Aug82.4°F81.6°F+0.7°RQC00667292
2009Sep81.6°F80.9°F+0.6°RQC00667292
2009Oct80.8°F80.1°F+0.7°RQC00667292
2009Nov79.4°F78.6°F+0.8°RQC00667292
2009Dec78.5°F76.5°F+2.0°RQC00667292
2010Jan77.0°F76.0°F+1.0°RQC00667292
2010Feb77.8°F76.0°F+1.8°RQC00667292
2010Mar79.1°F76.4°F+2.7°RQC00667292
2010Apr79.5°F77.9°F+1.6°RQC00667292
2010May80.6°F79.6°F+1.0°RQC00667292
2010Jun81.1°F80.7°F+0.4°RQC00667292
2010Jul82.3°F81.0°F+1.3°RQC00667292
2010Aug82.5°F81.6°F+0.8°RQC00667292
2010Sep81.6°F80.9°F+0.7°RQC00667292
2010Oct80.4°F80.1°F+0.3°RQC00667292
2010Nov78.4°F78.6°F-0.2°RQC00667292
2010Dec75.6°F76.5°F-0.9°RQC00667292
2011Jan76.4°F76.0°F+0.5°RQC00667292
2011Feb75.8°F76.0°F-0.3°RQC00667292
2011Mar74.8°F76.4°F-1.7°RQC00667292
2011Apr77.3°F77.9°F-0.6°RQC00667292
2011May78.3°F79.6°F-1.3°RQC00667292
2011Jun81.0°F80.7°F+0.3°RQC00667292
2011Jul81.0°F81.0°F+0.0°RQC00667292
2011Aug80.5°F81.6°F-1.1°RQC00667292
2011Sep80.3°F80.9°F-0.7°RQC00667292
2011Oct80.0°F80.1°F-0.1°RQC00667292
2011Nov78.7°F78.6°F+0.1°RQC00667292
2011Dec76.0°F76.5°F-0.6°RQC00667292
2012Jan75.0°F76.0°F-0.9°RQC00667292
2012Feb74.7°F76.0°F-1.4°RQC00667292
2012Mar75.6°F76.4°F-0.8°RQC00667292
2012Apr76.8°F77.9°F-1.1°RQC00667292
2012May77.9°F79.6°F-1.7°RQC00667292
2012Jun80.7°F80.7°F+0.0°RQC00667292
2012Jul80.1°F81.0°F-1.0°RQC00667292
2012Aug80.0°F81.6°F-1.6°RQC00667292
2012Sep80.3°F80.9°F-0.7°RQC00667292
2012Oct80.6°F80.1°F+0.5°RQC00667292
2012Nov78.7°F78.6°F+0.2°RQC00667292
2012Dec76.1°F76.5°F-0.4°RQC00667292
2013Jan74.8°F76.0°F-1.2°RQC00667292
2013Feb74.9°F76.0°F-1.2°RQC00667292
2013Mar75.6°F76.4°F-0.8°RQC00667292
2013Apr77.3°F77.9°F-0.7°RQC00667292
2013May78.7°F79.6°F-0.9°RQC00667292
2013Jun81.2°F80.7°F+0.5°RQC00667292
2013Jul79.8°F81.0°F-1.3°RQC00667292
2013Aug80.9°F81.6°F-0.8°RQC00667292
2013Sep79.7°F80.9°F-1.3°RQC00667292
2013Oct79.6°F80.1°F-0.5°RQC00667292
2013Nov78.6°F78.6°F+0.1°RQC00667292
2013Dec76.6°F76.5°F+0.1°RQC00667292
2014Jan76.6°F76.0°F+0.7°RQC00667292
2014Feb75.7°F76.0°F-0.3°RQC00667292
2014Mar75.6°F76.4°F-0.8°RQC00667292
2014Apr76.2°F77.9°F-1.7°RQC00667292
2014May77.7°F79.6°F-1.9°RQC00667292
2014Jun80.1°F80.7°F-0.6°RQC00667292
2014Jul79.0°F81.0°F-2.0°RQC00660158
2014Aug78.6°F81.6°F-3.1°RQC00660158
2014Sep83.0°F80.9°F+2.1°RQC00664193
2014Oct83.6°F80.1°F+3.4°RQC00664193
2014Nov76.0°F78.6°F-2.6°RQC00660158
2014Dec73.9°F76.5°F-2.6°RQC00660158
2015Jan73.8°F76.0°F-2.2°RQC00660158
2015Feb74.2°F76.0°F-1.8°RQC00660158
2015Mar73.8°F76.4°F-2.6°RQC00660158
2015Apr76.0°F77.9°F-2.0°RQC00660158
2015May77.9°F79.6°F-1.7°RQC00660158
2015Jun81.4°F80.7°F+0.7°RQC00660152
2015Jul78.9°F81.0°F-2.1°RQC00660158
2015Aug79.6°F81.6°F-2.0°RQC00660158
2015Sep79.4°F80.9°F-1.5°RQC00660158
2015Oct80.6°F80.1°F+0.4°RQC00660152
2015Nov75.6°F78.6°F-3.0°RQC00660158
2015Dec75.4°F76.5°F-1.2°RQC00660158
2016Jan73.5°F76.0°F-2.5°RQC00660158
2016Feb74.0°F76.0°F-2.0°RQC00660158
2016Mar73.9°F76.4°F-2.5°RQC00660158
2016Apr77.3°F77.9°F-0.7°RQC00660152
2016May77.1°F79.6°F-2.5°RQC00660158
2016Jun80.2°F80.7°F-0.5°RQC00660152
2016Jul79.4°F81.0°F-1.7°RQC00660158
2016Aug81.2°F81.6°F-0.4°RQC00660152
2016Sep74.3°F80.9°F-6.6°RQC00660158
2016Oct73.8°F80.1°F-6.3°RQC00660158
2016Nov71.7°F78.6°F-6.8°RQC00660158
2016Dec70.4°F76.5°F-6.1°RQC00660158
2017Jan72.3°F76.0°F-3.7°RQC00660158
2017Feb73.5°F76.0°F-2.5°RQC00660158
2017Mar75.6°F76.4°F-0.8°RQC00660152
2017Apr74.9°F77.9°F-3.0°RQC00660158
2017May77.1°F79.6°F-2.5°RQC00660158
2017Jun79.9°F80.7°F-0.8°RQC00660152
2017Jul79.4°F81.0°F-1.6°RQC00660158
2017Aug79.8°F81.6°F-1.8°RQC00660158
2017Dec81.1°F76.5°F+4.6°RQC00664193
2018Jan80.2°F76.0°F+4.2°RQC00664193
2018Feb71.8°F76.0°F-4.3°RQC00660158
2018Mar70.4°F76.4°F-6.0°RQC00660158
2018Apr75.5°F77.9°F-2.5°RQC00660158
2018May71.3°F79.6°F-8.3°RQC00660158
2018Jun77.6°F80.7°F-3.1°RQC00660158
2018Jul78.5°F81.0°F-2.5°RQC00660158
2018Aug78.6°F81.6°F-3.1°RQC00660158
2018Sep75.9°F80.9°F-5.0°RQC00660158
2018Oct74.2°F80.1°F-6.0°RQC00660158
2018Nov73.1°F78.6°F-5.4°RQC00660158
2018Dec71.0°F76.5°F-5.5°RQC00660158
2019Jan71.9°F76.0°F-4.1°RQC00660158
2019Feb72.4°F76.0°F-3.6°RQC00660158
2019Mar73.8°F76.4°F-2.6°RQC00660158
2019Apr74.6°F77.9°F-3.3°RQC00660158
2019May75.9°F79.6°F-3.7°RQC00660158
2019Jun78.7°F80.7°F-2.0°RQC00660158
2019Jul79.5°F81.0°F-1.5°RQC00660158
2019Aug79.4°F81.6°F-2.3°RQC00660158
2019Sep79.6°F80.9°F-1.3°RQC00660158
2019Oct78.8°F80.1°F-1.3°RQC00660158
2019Nov77.1°F78.6°F-1.5°RQC00660158
2019Dec75.9°F76.5°F-0.6°RQC00660158
2020Jan73.8°F76.0°F-2.2°RQC00660158
2020Feb74.2°F76.0°F-1.8°RQC00660158
2020Mar73.9°F76.4°F-2.5°RQC00660158
2020Apr77.0°F77.9°F-1.0°RQC00660158
2020May78.8°F79.6°F-0.8°RQC00660158
2020Jun78.0°F80.7°F-2.7°RQC00660158
2020Jul79.9°F81.0°F-1.1°RQC00660158
2020Aug80.0°F81.6°F-1.6°RQC00660158
2020Sep75.8°F80.9°F-5.1°RQC00660158
2020Oct74.2°F80.1°F-6.0°RQC00660158
2020Nov72.4°F78.6°F-6.2°RQC00660158
2020Dec70.3°F76.5°F-6.2°RQC00660158
2021Feb71.0°F76.0°F-5.0°RQC00660158
2021Mar69.6°F76.4°F-6.8°RQC00660158
2021Apr70.9°F77.9°F-7.1°RQC00660158
2021May73.3°F79.6°F-6.3°RQC00660158
2021Jun73.9°F80.7°F-6.8°RQC00660158
2021Jul75.3°F81.0°F-5.7°RQC00660158
2021Aug78.4°F81.6°F-3.3°RQC00660152
2021Sep75.6°F80.9°F-5.3°RQC00660158
2021Oct74.2°F80.1°F-5.9°RQC00660158
2021Nov72.3°F78.6°F-6.3°RQC00660158
2021Dec70.4°F76.5°F-6.2°RQC00660158
2022Jan68.9°F76.0°F-7.1°RQC00660158
2022Feb68.8°F76.0°F-7.3°RQC00660158
2022Mar69.9°F76.4°F-6.5°RQC00660158
2022Apr70.6°F77.9°F-7.3°RQC00660158
2022May73.3°F79.6°F-6.3°RQC00660158
2022Jun75.0°F80.7°F-5.7°RQC00660158
2022Jul74.8°F81.0°F-6.2°RQC00660158
2022Aug78.3°F81.6°F-3.4°RQC00660152
2022Sep73.8°F80.9°F-7.2°RQC00660158
2022Oct78.0°F80.1°F-2.1°RQC00660152
2022Nov74.3°F78.6°F-4.3°RQC00660152
2022Dec71.0°F76.5°F-5.5°RQC00660152
2023Jan70.7°F76.0°F-5.3°RQC00660152
2023Feb76.6°F76.0°F+0.6°RQC00667292
2023Mar76.8°F76.4°F+0.4°RQC00667292
2023Apr78.0°F77.9°F+0.1°RQC00667292
2023May81.5°F79.6°F+1.9°RQC00667292
2023Jun79.5°F80.7°F-1.1°RQC00660152
2023Jul79.8°F81.0°F-1.2°RQC00660152
2023Aug84.1°F81.6°F+2.5°RQC00667292
2023Sep83.6°F80.9°F+2.7°RQC00667292
2023Oct83.5°F80.1°F+3.3°RQC00667292
2023Nov81.6°F78.6°F+3.0°RQC00667292
2023Dec79.1°F76.5°F+2.6°RQC00667292
2024Jan78.7°F76.0°F+2.7°RQC00667292
2024Feb77.6°F76.0°F+1.5°RQC00667292
2024Mar78.5°F76.4°F+2.1°RQC00667292
2024Apr80.0°F77.9°F+2.1°RQC00667292
2024May82.9°F79.6°F+3.2°RQC00667292
2024Jun84.3°F80.7°F+3.6°RQC00667292
2024Jul85.1°F81.0°F+4.0°RQC00667292
2024Aug84.0°F81.6°F+2.4°RQC00667292
2024Sep83.9°F80.9°F+3.0°RQC00667292
2024Oct83.4°F80.1°F+3.2°RQC00667292
2024Nov80.9°F78.6°F+2.3°RQC00667292
2024Dec74.9°F76.5°F-1.7°RQC00660152
2025Jan79.1°F76.0°F+3.1°RQC00667292
2025Feb78.5°F76.0°F+2.5°RQC00667292
2025Mar78.6°F76.4°F+2.2°RQC00667292
2025Apr79.7°F77.9°F+1.8°RQC00667292
2025May81.1°F79.6°F+1.4°RQC00667292
2025Jun83.1°F80.7°F+2.4°RQC00667292
2025Jul83.2°F81.0°F+2.1°RQC00667292
2025Aug83.6°F81.6°F+2.0°RQC00667292
2025Sep83.2°F80.9°F+2.3°RQC00667292
2025Oct82.5°F80.1°F+2.4°RQC00667292
2025Nov80.3°F78.6°F+1.7°RQC00667292
2025Dec78.3°F76.5°F+1.7°RQC00667292
2026Jan77.4°F76.0°F+1.4°RQC00667292

Showing 1,149 of 1,149 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).

209

Initial gaps

194

Filled

15

Unfillable

Fill stations: PONCE SANTA ISABEL, PR US, AIBONITO 1 S, PR US, GUAYAMA 1 SW, PR US, AGUIRRE, PR US, PONCE MERCEDITA, PR US, AGUIRRE, PR US, JUANA DIAZ CAMP, 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: 1966 – 1991 (100% coverage)

MonthBaselineYears
January76.0°F26/26
February76.0°F26/26
March76.4°F26/26
April77.9°F26/26
May79.6°F26/26
June80.7°F26/26
July81.0°F26/26
August81.6°F26/26
September80.9°F26/26
October80.1°F26/26
November78.6°F26/26
December76.5°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 Santa Isabel, Puerto Rico getting warmer?

Based on 96+ years of NOAA temperature records, Santa Isabel has changed at a rate of approximately 0.08°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 Santa Isabel?

The warmest year on record in Santa Isabel was 1998, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Santa Isabel come from?

Data comes from the PONCE 4 E, PR US weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 96+ years of temperature observations used to build Santa Isabel's climate profile.

How are the climate visualizations for Santa Isabel created?

Three visualizations are generated from Santa Isabel'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 Santa Isabel's temperature data?

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

Wear Santa Isabel's Climate Story

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

Shop Santa Isabel Climate Apparel →

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