Climate Change in Derby, Indiana

96+ years of recorded temperature data show Derby is changing.

Based on our analysis of 96 years of temperature data near Derby, IN, this area shows relatively stable temperatures of approximately +0.0°F per decade. 9 of the last 10 years recorded above-average temperatures, and 2012 was the warmest year on record at +3.6°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.0°F

per decade

Warmest Year

2012

+3.6°F anomaly

Recent Warm Years

9 / 10

above-average years

Decade Shift

-0.5°F

2020s vs 1930s

Compared to the National Average

Derby is warming 0.2°F/decade slower than the national average.

National: +0.20°F/decade
Derby: +0.03°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 Derby's long-term warming trend.

Temperature anomaly spiral for Derby, Indiana
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Derby, IN.

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 Derby, Indiana
Warming stripes: each stripe is one year of average temperature anomaly for Derby, IN.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.03°F per decade quantifies the rate of change.

Temperature trend chart for Derby, Indiana
Linear trend: annual temperature anomalies with trend line for Derby, IN.

Temperature by Decade

1930s
+1.29°F
1940s
+0.71°F
1950s
+0.51°F
1960s
-0.52°F
1970s
-0.23°F
1980s
+0.15°F
1990s
+0.80°F
2000s
+0.99°F
2010s
+1.13°F
2020s
+0.79°F

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

Anomaly Scale

-5.2°F Colder Normal +6.7°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 Derby, IN. Filter by decade or download as CSV.

Data Sources & Audit

Station
nClimGrid 5km Grid Point
Distance
1.5 mi
Coverage
99.1%
Records
1,154
Range
1930-01 – 2026-02
Full Data Audit 1,154 records
YearMonthTempBaselineAnomalySourceGap
1930Jan31.0°F30.5°F+0.5°NCLIMGRID
1930Feb44.6°F34.6°F+9.9°NCLIMGRID
1930Mar42.2°F45.6°F-3.4°NCLIMGRID
1930Apr57.9°F55.6°F+2.4°NCLIMGRID
1930May65.8°F64.3°F+1.5°NCLIMGRID
1930Jun72.8°F73.1°F-0.4°NCLIMGRID
1930Jul80.3°F76.9°F+3.4°NCLIMGRID
1930Aug77.1°F75.1°F+2.0°NCLIMGRID
1930Sep70.8°F68.5°F+2.3°NCLIMGRID
1930Oct54.4°F56.3°F-2.0°NCLIMGRID
1930Nov45.8°F46.0°F-0.3°NCLIMGRID
1930Dec34.1°F36.2°F-2.0°NCLIMGRID
1931Jan36.1°F30.5°F+5.6°NCLIMGRID
1931Feb39.9°F34.6°F+5.2°NCLIMGRID
1931Mar40.0°F45.6°F-5.6°NCLIMGRID
1931Apr54.6°F55.6°F-1.0°NCLIMGRID
1931May61.5°F64.3°F-2.8°NCLIMGRID
1931Jun75.0°F73.1°F+1.9°NCLIMGRID
1931Jul79.6°F76.9°F+2.7°NCLIMGRID
1931Aug74.8°F75.1°F-0.3°NCLIMGRID
1931Sep74.0°F68.5°F+5.5°NCLIMGRID
1931Oct60.7°F56.3°F+4.4°NCLIMGRID
1931Nov53.9°F46.0°F+7.9°NCLIMGRID
1931Dec44.4°F36.2°F+8.2°NCLIMGRID
1932Jan41.7°F30.5°F+11.2°NCLIMGRID
1932Feb45.1°F34.6°F+10.5°NCLIMGRID
1932Mar38.9°F45.6°F-6.7°NCLIMGRID
1932Apr55.0°F55.6°F-0.6°NCLIMGRID
1932May64.6°F64.3°F+0.3°NCLIMGRID
1932Jun74.0°F73.1°F+0.9°NCLIMGRID
1932Jul78.2°F76.9°F+1.2°NCLIMGRID
1932Aug75.6°F75.1°F+0.5°NCLIMGRID
1932Sep67.9°F68.5°F-0.6°NCLIMGRID
1932Oct55.7°F56.3°F-0.7°NCLIMGRID
1932Nov42.3°F46.0°F-3.8°NCLIMGRID
1932Dec35.3°F36.2°F-0.8°NCLIMGRID
1933Jan41.9°F30.5°F+11.4°NCLIMGRID
1933Feb35.4°F34.6°F+0.8°NCLIMGRID
1933Mar43.8°F45.6°F-1.7°NCLIMGRID
1933Apr54.2°F55.6°F-1.3°NCLIMGRID
1933May67.6°F64.3°F+3.3°NCLIMGRID
1933Jun76.8°F73.1°F+3.7°NCLIMGRID
1933Jul77.3°F76.9°F+0.3°NCLIMGRID
1933Aug74.2°F75.1°F-0.9°NCLIMGRID
1933Sep73.7°F68.5°F+5.2°NCLIMGRID
1933Oct56.0°F56.3°F-0.4°NCLIMGRID
1933Nov44.1°F46.0°F-1.9°NCLIMGRID
1933Dec41.4°F36.2°F+5.2°NCLIMGRID
1934Jan37.9°F30.5°F+7.4°NCLIMGRID
1934Feb29.7°F34.6°F-4.9°NCLIMGRID
1934Mar41.8°F45.6°F-3.8°NCLIMGRID
1934Apr55.6°F55.6°F+0.0°NCLIMGRID
1934May66.9°F64.3°F+2.6°NCLIMGRID
1934Jun77.5°F73.1°F+4.4°NCLIMGRID
1934Jul80.6°F76.9°F+3.6°NCLIMGRID
1934Aug76.5°F75.1°F+1.4°NCLIMGRID
1934Sep67.6°F68.5°F-0.9°NCLIMGRID
1934Oct58.8°F56.3°F+2.4°NCLIMGRID
1934Nov49.4°F46.0°F+3.3°NCLIMGRID
1934Dec34.6°F36.2°F-1.5°NCLIMGRID
1935Jan35.3°F30.5°F+4.8°NCLIMGRID
1935Feb38.0°F34.6°F+3.4°NCLIMGRID
1935Mar52.7°F45.6°F+7.1°NCLIMGRID
1935Apr53.8°F55.6°F-1.8°NCLIMGRID
1935May61.8°F64.3°F-2.6°NCLIMGRID
1935Jun69.2°F73.1°F-3.9°NCLIMGRID
1935Jul78.4°F76.9°F+1.4°NCLIMGRID
1935Aug76.4°F75.1°F+1.3°NCLIMGRID
1935Sep67.1°F68.5°F-1.4°NCLIMGRID
1935Oct58.1°F56.3°F+1.8°NCLIMGRID
1935Nov44.9°F46.0°F-1.1°NCLIMGRID
1935Dec28.1°F36.2°F-8.1°NCLIMGRID
1936Jan26.7°F30.5°F-3.8°NCLIMGRID
1936Feb29.5°F34.6°F-5.2°NCLIMGRID
1936Mar49.4°F45.6°F+3.9°NCLIMGRID
1936Apr51.5°F55.6°F-4.1°NCLIMGRID
1936May68.0°F64.3°F+3.7°NCLIMGRID
1936Jun76.0°F73.1°F+2.9°NCLIMGRID
1936Jul82.2°F76.9°F+5.3°NCLIMGRID
1936Aug82.3°F75.1°F+7.2°NCLIMGRID
1936Sep74.1°F68.5°F+5.6°NCLIMGRID
1936Oct56.9°F56.3°F+0.5°NCLIMGRID
1936Nov41.1°F46.0°F-4.9°NCLIMGRID
1936Dec39.0°F36.2°F+2.9°NCLIMGRID
1937Jan39.0°F30.5°F+8.5°NCLIMGRID
1937Feb35.9°F34.6°F+1.2°NCLIMGRID
1937Mar40.7°F45.6°F-4.9°NCLIMGRID
1937Apr54.3°F55.6°F-1.2°NCLIMGRID
1937May64.8°F64.3°F+0.5°NCLIMGRID
1937Jun74.0°F73.1°F+0.8°NCLIMGRID
1937Jul75.7°F76.9°F-1.3°NCLIMGRID
1937Aug78.3°F75.1°F+3.2°NCLIMGRID
1937Sep66.6°F68.5°F-1.9°NCLIMGRID
1937Oct54.8°F56.3°F-1.5°NCLIMGRID
1937Nov41.8°F46.0°F-4.3°NCLIMGRID
1937Dec33.9°F36.2°F-2.3°NCLIMGRID
1938Jan33.3°F30.5°F+2.8°NCLIMGRID
1938Feb44.0°F34.6°F+9.4°NCLIMGRID
1938Mar52.1°F45.6°F+6.5°NCLIMGRID
1938Apr58.3°F55.6°F+2.7°NCLIMGRID
1938May65.1°F64.3°F+0.8°NCLIMGRID
1938Jun71.8°F73.1°F-1.4°NCLIMGRID
1938Jul76.7°F76.9°F-0.3°NCLIMGRID
1938Aug77.6°F75.1°F+2.5°NCLIMGRID
1938Sep69.9°F68.5°F+1.4°NCLIMGRID
1938Oct59.4°F56.3°F+3.0°NCLIMGRID
1938Nov46.6°F46.0°F+0.6°NCLIMGRID
1938Dec36.4°F36.2°F+0.2°NCLIMGRID
1939Jan38.6°F30.5°F+8.1°NCLIMGRID
1939Feb37.3°F34.6°F+2.7°NCLIMGRID
1939Mar47.4°F45.6°F+1.8°NCLIMGRID
1939Apr52.4°F55.6°F-3.1°NCLIMGRID
1939May66.3°F64.3°F+2.0°NCLIMGRID
1939Jun75.1°F73.1°F+1.9°NCLIMGRID
1939Jul77.2°F76.9°F+0.2°NCLIMGRID
1939Aug75.2°F75.1°F+0.1°NCLIMGRID
1939Sep73.9°F68.5°F+5.4°NCLIMGRID
1939Oct59.7°F56.3°F+3.3°NCLIMGRID
1939Nov42.7°F46.0°F-3.3°NCLIMGRID
1939Dec37.5°F36.2°F+1.3°NCLIMGRID
1940Jan18.2°F30.5°F-12.3°NCLIMGRID
1940Feb35.1°F34.6°F+0.4°NCLIMGRID
1940Mar42.8°F45.6°F-2.8°NCLIMGRID
1940Apr53.5°F55.6°F-2.0°NCLIMGRID
1940May62.9°F64.3°F-1.4°NCLIMGRID
1940Jun74.6°F73.1°F+1.4°NCLIMGRID
1940Jul76.9°F76.9°F+0.0°NCLIMGRID
1940Aug77.1°F75.1°F+2.0°NCLIMGRID
1940Sep66.8°F68.5°F-1.8°NCLIMGRID
1940Oct59.6°F56.3°F+3.3°NCLIMGRID
1940Nov44.2°F46.0°F-1.8°NCLIMGRID
1940Dec40.5°F36.2°F+4.4°NCLIMGRID
1941Jan34.0°F30.5°F+3.5°NCLIMGRID
1941Feb31.2°F34.6°F-3.4°NCLIMGRID
1941Mar39.4°F45.6°F-6.2°NCLIMGRID
1941Apr59.9°F55.6°F+4.3°NCLIMGRID
1941May68.3°F64.3°F+4.0°NCLIMGRID
1941Jun75.6°F73.1°F+2.5°NCLIMGRID
1941Jul78.2°F76.9°F+1.3°NCLIMGRID
1941Aug77.3°F75.1°F+2.2°NCLIMGRID
1941Sep72.5°F68.5°F+4.0°NCLIMGRID
1941Oct62.8°F56.3°F+6.4°NCLIMGRID
1941Nov44.8°F46.0°F-1.3°NCLIMGRID
1941Dec40.0°F36.2°F+3.8°NCLIMGRID
1942Jan29.7°F30.5°F-0.8°NCLIMGRID
1942Feb32.2°F34.6°F-2.4°NCLIMGRID
1942Mar46.3°F45.6°F+0.7°NCLIMGRID
1942Apr57.9°F55.6°F+2.3°NCLIMGRID
1942May65.6°F64.3°F+1.3°NCLIMGRID
1942Jun74.8°F73.1°F+1.7°NCLIMGRID
1942Jul78.3°F76.9°F+1.3°NCLIMGRID
1942Aug75.7°F75.1°F+0.6°NCLIMGRID
1942Sep67.9°F68.5°F-0.6°NCLIMGRID
1942Oct57.6°F56.3°F+1.2°NCLIMGRID
1942Nov48.1°F46.0°F+2.0°NCLIMGRID
1942Dec33.4°F36.2°F-2.8°NCLIMGRID
1943Jan34.6°F30.5°F+4.1°NCLIMGRID
1943Feb37.5°F34.6°F+2.8°NCLIMGRID
1943Mar40.7°F45.6°F-4.9°NCLIMGRID
1943Apr53.9°F55.6°F-1.7°NCLIMGRID
1943May67.0°F64.3°F+2.7°NCLIMGRID
1943Jun77.7°F73.1°F+4.6°NCLIMGRID
1943Jul78.8°F76.9°F+1.8°NCLIMGRID
1943Aug78.9°F75.1°F+3.8°NCLIMGRID
1943Sep66.2°F68.5°F-2.3°NCLIMGRID
1943Oct55.7°F56.3°F-0.7°NCLIMGRID
1943Nov42.7°F46.0°F-3.4°NCLIMGRID
1943Dec32.5°F36.2°F-3.7°NCLIMGRID
1944Jan35.2°F30.5°F+4.7°NCLIMGRID
1944Feb39.4°F34.6°F+4.8°NCLIMGRID
1944Mar42.9°F45.6°F-2.7°NCLIMGRID
1944Apr55.6°F55.6°F+0.1°NCLIMGRID
1944May70.5°F64.3°F+6.2°NCLIMGRID
1944Jun78.3°F73.1°F+5.1°NCLIMGRID
1944Jul77.9°F76.9°F+1.0°NCLIMGRID
1944Aug77.1°F75.1°F+2.0°NCLIMGRID
1944Sep68.8°F68.5°F+0.3°NCLIMGRID
1944Oct56.5°F56.3°F+0.1°NCLIMGRID
1944Nov46.0°F46.0°F-0.1°NCLIMGRID
1944Dec30.0°F36.2°F-6.2°NCLIMGRID
1945Jan28.3°F30.5°F-2.2°NCLIMGRID
1945Feb36.5°F34.6°F+1.8°NCLIMGRID
1945Mar54.6°F45.6°F+9.0°NCLIMGRID
1945Apr57.7°F55.6°F+2.1°NCLIMGRID
1945May61.3°F64.3°F-3.0°NCLIMGRID
1945Jun71.5°F73.1°F-1.6°NCLIMGRID
1945Jul75.1°F76.9°F-1.8°NCLIMGRID
1945Aug75.2°F75.1°F+0.1°NCLIMGRID
1945Sep71.9°F68.5°F+3.4°NCLIMGRID
1945Oct55.7°F56.3°F-0.7°NCLIMGRID
1945Nov46.3°F46.0°F+0.3°NCLIMGRID
1945Dec29.4°F36.2°F-6.7°NCLIMGRID
1946Jan34.2°F30.5°F+3.7°NCLIMGRID
1946Feb38.7°F34.6°F+4.0°NCLIMGRID
1946Mar55.4°F45.6°F+9.8°NCLIMGRID
1946Apr58.7°F55.6°F+3.1°NCLIMGRID
1946May62.7°F64.3°F-1.6°NCLIMGRID
1946Jun73.9°F73.1°F+0.8°NCLIMGRID
1946Jul76.1°F76.9°F-0.8°NCLIMGRID
1946Aug70.8°F75.1°F-4.3°NCLIMGRID
1946Sep68.3°F68.5°F-0.2°NCLIMGRID
1946Oct59.1°F56.3°F+2.8°NCLIMGRID
1946Nov49.8°F46.0°F+3.8°NCLIMGRID
1946Dec40.7°F36.2°F+4.6°NCLIMGRID
1947Jan37.5°F30.5°F+7.0°NCLIMGRID
1947Feb27.9°F34.6°F-6.8°NCLIMGRID
1947Mar36.8°F45.6°F-8.7°NCLIMGRID
1947Apr56.8°F55.6°F+1.2°NCLIMGRID
1947May62.0°F64.3°F-2.3°NCLIMGRID
1947Jun72.4°F73.1°F-0.7°NCLIMGRID
1947Jul72.3°F76.9°F-4.6°NCLIMGRID
1947Aug81.0°F75.1°F+5.9°NCLIMGRID
1947Sep69.7°F68.5°F+1.2°NCLIMGRID
1947Oct64.5°F56.3°F+8.1°NCLIMGRID
1947Nov42.0°F46.0°F-4.1°NCLIMGRID
1947Dec36.8°F36.2°F+0.6°NCLIMGRID
1948Jan24.6°F30.5°F-5.9°NCLIMGRID
1948Feb35.3°F34.6°F+0.6°NCLIMGRID
1948Mar47.4°F45.6°F+1.8°NCLIMGRID
1948Apr59.0°F55.6°F+3.4°NCLIMGRID
1948May64.0°F64.3°F-0.3°NCLIMGRID
1948Jun75.1°F73.1°F+2.0°NCLIMGRID
1948Jul77.3°F76.9°F+0.4°NCLIMGRID
1948Aug75.3°F75.1°F+0.2°NCLIMGRID
1948Sep69.6°F68.5°F+1.1°NCLIMGRID
1948Oct55.0°F56.3°F-1.3°NCLIMGRID
1948Nov47.9°F46.0°F+1.8°NCLIMGRID
1948Dec38.8°F36.2°F+2.6°NCLIMGRID
1949Jan40.8°F30.5°F+10.3°NCLIMGRID
1949Feb40.1°F34.6°F+5.4°NCLIMGRID
1949Mar44.5°F45.6°F-1.1°NCLIMGRID
1949Apr53.5°F55.6°F-2.0°NCLIMGRID
1949May66.1°F64.3°F+1.8°NCLIMGRID
1949Jun75.0°F73.1°F+1.9°NCLIMGRID
1949Jul80.1°F76.9°F+3.1°NCLIMGRID
1949Aug75.5°F75.1°F+0.4°NCLIMGRID
1949Sep63.4°F68.5°F-5.1°NCLIMGRID
1949Oct61.2°F56.3°F+4.8°NCLIMGRID
1949Nov45.2°F46.0°F-0.8°NCLIMGRID
1949Dec40.2°F36.2°F+4.0°NCLIMGRID
1950Jan42.1°F30.5°F+11.6°NCLIMGRID
1950Feb38.1°F34.6°F+3.5°NCLIMGRID
1950Mar41.7°F45.6°F-3.9°NCLIMGRID
1950Apr50.5°F55.6°F-5.1°NCLIMGRID
1950May66.2°F64.3°F+1.9°NCLIMGRID
1950Jun72.3°F73.1°F-0.9°NCLIMGRID
1950Jul73.0°F76.9°F-3.9°NCLIMGRID
1950Aug72.1°F75.1°F-3.0°NCLIMGRID
1950Sep65.9°F68.5°F-2.6°NCLIMGRID
1950Oct61.5°F56.3°F+5.2°NCLIMGRID
1950Nov39.3°F46.0°F-6.7°NCLIMGRID
1950Dec29.3°F36.2°F-6.9°NCLIMGRID
1951Jan34.6°F30.5°F+4.1°NCLIMGRID
1951Feb35.4°F34.6°F+0.7°NCLIMGRID
1951Mar42.6°F45.6°F-3.0°NCLIMGRID
1951Apr51.9°F55.6°F-3.7°NCLIMGRID
1951May65.4°F64.3°F+1.1°NCLIMGRID
1951Jun73.3°F73.1°F+0.1°NCLIMGRID
1951Jul76.8°F76.9°F-0.2°NCLIMGRID
1951Aug75.8°F75.1°F+0.7°NCLIMGRID
1951Sep66.7°F68.5°F-1.8°NCLIMGRID
1951Oct59.0°F56.3°F+2.7°NCLIMGRID
1951Nov38.2°F46.0°F-7.8°NCLIMGRID
1951Dec36.8°F36.2°F+0.7°NCLIMGRID
1952Jan38.9°F30.5°F+8.4°NCLIMGRID
1952Feb40.0°F34.6°F+5.3°NCLIMGRID
1952Mar44.3°F45.6°F-1.3°NCLIMGRID
1952Apr54.4°F55.6°F-1.2°NCLIMGRID
1952May64.9°F64.3°F+0.6°NCLIMGRID
1952Jun79.3°F73.1°F+6.1°NCLIMGRID
1952Jul79.9°F76.9°F+3.0°NCLIMGRID
1952Aug75.8°F75.1°F+0.7°NCLIMGRID
1952Sep66.7°F68.5°F-1.8°NCLIMGRID
1952Oct50.8°F56.3°F-5.5°NCLIMGRID
1952Nov45.5°F46.0°F-0.5°NCLIMGRID
1952Dec37.5°F36.2°F+1.4°NCLIMGRID
1953Jan38.6°F30.5°F+8.1°NCLIMGRID
1953Feb40.7°F34.6°F+6.0°NCLIMGRID
1953Mar46.8°F45.6°F+1.2°NCLIMGRID
1953Apr51.7°F55.6°F-3.9°NCLIMGRID
1953May67.4°F64.3°F+3.1°NCLIMGRID
1953Jun78.1°F73.1°F+4.9°NCLIMGRID
1953Jul78.1°F76.9°F+1.2°NCLIMGRID
1953Aug76.7°F75.1°F+1.6°NCLIMGRID
1953Sep70.0°F68.5°F+1.5°NCLIMGRID
1953Oct60.1°F56.3°F+3.7°NCLIMGRID
1953Nov45.6°F46.0°F-0.5°NCLIMGRID
1953Dec35.5°F36.2°F-0.7°NCLIMGRID
1954Jan34.5°F30.5°F+4.0°NCLIMGRID
1954Feb43.8°F34.6°F+9.2°NCLIMGRID
1954Mar43.3°F45.6°F-2.3°NCLIMGRID
1954Apr60.5°F55.6°F+5.0°NCLIMGRID
1954May60.1°F64.3°F-4.2°NCLIMGRID
1954Jun75.8°F73.1°F+2.7°NCLIMGRID
1954Jul79.5°F76.9°F+2.6°NCLIMGRID
1954Aug78.0°F75.1°F+2.9°NCLIMGRID
1954Sep71.8°F68.5°F+3.3°NCLIMGRID
1954Oct58.8°F56.3°F+2.4°NCLIMGRID
1954Nov45.1°F46.0°F-0.9°NCLIMGRID
1954Dec35.3°F36.2°F-0.9°NCLIMGRID
1955Jan31.3°F30.5°F+0.8°NCLIMGRID
1955Feb36.1°F34.6°F+1.4°NCLIMGRID
1955Mar45.5°F45.6°F+0.0°NCLIMGRID
1955Apr59.4°F55.6°F+3.8°NCLIMGRID
1955May66.4°F64.3°F+2.1°NCLIMGRID
1955Jun67.9°F73.1°F-5.2°NCLIMGRID
1955Jul80.3°F76.9°F+3.4°NCLIMGRID
1955Aug78.3°F75.1°F+3.2°NCLIMGRID
1955Sep71.6°F68.5°F+3.1°NCLIMGRID
1955Oct57.5°F56.3°F+1.2°NCLIMGRID
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1984Feb40.2°F34.6°F+5.5°NCLIMGRID
1984Mar39.8°F45.6°F-5.8°NCLIMGRID
1984Apr54.2°F55.6°F-1.4°NCLIMGRID
1984May61.6°F64.3°F-2.7°NCLIMGRID
1984Jun76.2°F73.1°F+3.1°NCLIMGRID
1984Jul74.5°F76.9°F-2.4°NCLIMGRID
1984Aug75.2°F75.1°F+0.1°NCLIMGRID
1984Sep66.7°F68.5°F-1.8°NCLIMGRID
1984Oct62.4°F56.3°F+6.1°NCLIMGRID
1984Nov43.9°F46.0°F-2.1°NCLIMGRID
1984Dec44.3°F36.2°F+8.1°NCLIMGRID
1985Jan24.5°F30.5°F-6.0°NCLIMGRID
1985Feb30.2°F34.6°F-4.4°NCLIMGRID
1985Mar49.2°F45.6°F+3.6°NCLIMGRID
1985Apr59.1°F55.6°F+3.6°NCLIMGRID
1985May65.6°F64.3°F+1.3°NCLIMGRID
1985Jun72.1°F73.1°F-1.0°NCLIMGRID
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1985Sep68.1°F68.5°F-0.5°NCLIMGRID
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1985Nov52.6°F46.0°F+6.6°NCLIMGRID
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1986Feb39.2°F34.6°F+4.6°NCLIMGRID
1986Mar46.9°F45.6°F+1.3°NCLIMGRID
1986Apr57.5°F55.6°F+1.9°NCLIMGRID
1986May66.7°F64.3°F+2.4°NCLIMGRID
1986Jun75.1°F73.1°F+2.0°NCLIMGRID
1986Jul79.2°F76.9°F+2.2°NCLIMGRID
1986Aug72.3°F75.1°F-2.8°NCLIMGRID
1986Sep71.6°F68.5°F+3.1°NCLIMGRID
1986Oct58.0°F56.3°F+1.7°NCLIMGRID
1986Nov44.5°F46.0°F-1.5°NCLIMGRID
1986Dec35.4°F36.2°F-0.7°NCLIMGRID
1987Jan32.2°F30.5°F+1.7°NCLIMGRID
1987Feb38.5°F34.6°F+3.9°NCLIMGRID
1987Mar48.5°F45.6°F+2.9°NCLIMGRID
1987Apr53.3°F55.6°F-2.2°NCLIMGRID
1987May70.1°F64.3°F+5.8°NCLIMGRID
1987Jun75.1°F73.1°F+2.0°NCLIMGRID
1987Jul77.8°F76.9°F+0.9°NCLIMGRID
1987Aug77.9°F75.1°F+2.8°NCLIMGRID
1987Sep70.2°F68.5°F+1.7°NCLIMGRID
1987Oct50.5°F56.3°F-5.8°NCLIMGRID
1987Nov50.1°F46.0°F+4.1°NCLIMGRID
1987Dec38.9°F36.2°F+2.7°NCLIMGRID
1988Jan28.5°F30.5°F-2.0°NCLIMGRID
1988Feb33.3°F34.6°F-1.4°NCLIMGRID
1988Mar45.2°F45.6°F-0.4°NCLIMGRID
1988Apr55.3°F55.6°F-0.3°NCLIMGRID
1988May65.0°F64.3°F+0.7°NCLIMGRID
1988Jun73.9°F73.1°F+0.7°NCLIMGRID
1988Jul77.8°F76.9°F+0.9°NCLIMGRID
1988Aug77.8°F75.1°F+2.7°NCLIMGRID
1988Sep68.0°F68.5°F-0.5°NCLIMGRID
1988Oct50.0°F56.3°F-6.4°NCLIMGRID
1988Nov46.3°F46.0°F+0.3°NCLIMGRID
1988Dec36.6°F36.2°F+0.4°NCLIMGRID
1989Jan39.9°F30.5°F+9.4°NCLIMGRID
1989Feb32.5°F34.6°F-2.2°NCLIMGRID
1989Mar46.7°F45.6°F+1.2°NCLIMGRID
1989Apr55.9°F55.6°F+0.3°NCLIMGRID
1989May60.8°F64.3°F-3.5°NCLIMGRID
1989Jun72.2°F73.1°F-1.0°NCLIMGRID
1989Jul76.0°F76.9°F-0.9°NCLIMGRID
1989Aug74.6°F75.1°F-0.5°NCLIMGRID
1989Sep67.2°F68.5°F-1.4°NCLIMGRID
1989Oct57.2°F56.3°F+0.9°NCLIMGRID
1989Nov45.3°F46.0°F-0.7°NCLIMGRID
1989Dec23.7°F36.2°F-12.5°NCLIMGRID
1990Jan41.3°F30.5°F+10.8°NCLIMGRID
1990Feb43.5°F34.6°F+8.8°NCLIMGRID
1990Mar48.6°F45.6°F+3.0°NCLIMGRID
1990Apr53.6°F55.6°F-1.9°NCLIMGRID
1990May61.9°F64.3°F-2.4°NCLIMGRID
1990Jun72.9°F73.1°F-0.3°NCLIMGRID
1990Jul75.7°F76.9°F-1.2°NCLIMGRID
1990Aug74.0°F75.1°F-1.1°NCLIMGRID
1990Sep69.9°F68.5°F+1.4°NCLIMGRID
1990Oct55.6°F56.3°F-0.7°NCLIMGRID
1990Nov49.8°F46.0°F+3.8°NCLIMGRID
1990Dec38.8°F36.2°F+2.6°NCLIMGRID
1991Jan31.8°F30.5°F+1.3°NCLIMGRID
1991Feb39.0°F34.6°F+4.4°NCLIMGRID
1991Mar48.4°F45.6°F+2.9°NCLIMGRID
1991Apr58.8°F55.6°F+3.3°NCLIMGRID
1991May70.6°F64.3°F+6.3°NCLIMGRID
1991Jun75.8°F73.1°F+2.6°NCLIMGRID
1991Jul78.4°F76.9°F+1.4°NCLIMGRID
1991Aug76.6°F75.1°F+1.5°NCLIMGRID
1991Sep69.6°F68.5°F+1.1°NCLIMGRID
1991Oct59.0°F56.3°F+2.7°NCLIMGRID
1991Nov43.6°F46.0°F-2.4°NCLIMGRID
1991Dec39.6°F36.2°F+3.4°NCLIMGRID
1992Jan34.9°F30.5°F+4.4°NCLIMGRID
1992Feb42.3°F34.6°F+7.6°NCLIMGRID
1992Mar45.6°F45.6°F+0.1°NCLIMGRID
1992Apr56.2°F55.6°F+0.6°NCLIMGRID
1992May62.1°F64.3°F-2.2°NCLIMGRID
1992Jun69.5°F73.1°F-3.6°NCLIMGRID
1992Jul76.7°F76.9°F-0.2°NCLIMGRID
1992Aug71.2°F75.1°F-3.9°NCLIMGRID
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1992Nov46.4°F46.0°F+0.4°NCLIMGRID
1992Dec36.4°F36.2°F+0.3°NCLIMGRID
1993Jan36.2°F30.5°F+5.7°NCLIMGRID
1993Feb32.5°F34.6°F-2.2°NCLIMGRID
1993Mar41.7°F45.6°F-3.8°NCLIMGRID
1993Apr53.2°F55.6°F-2.3°NCLIMGRID
1993May64.6°F64.3°F+0.3°NCLIMGRID
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1993Nov44.1°F46.0°F-1.9°NCLIMGRID
1993Dec35.9°F36.2°F-0.3°NCLIMGRID
1994Jan26.7°F30.5°F-3.8°NCLIMGRID
1994Feb36.4°F34.6°F+1.8°NCLIMGRID
1994Mar44.3°F45.6°F-1.2°NCLIMGRID
1994Apr57.5°F55.6°F+1.9°NCLIMGRID
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1994Jun75.1°F73.1°F+2.0°NCLIMGRID
1994Jul76.4°F76.9°F-0.6°NCLIMGRID
1994Aug73.1°F75.1°F-2.0°NCLIMGRID
1994Sep65.6°F68.5°F-2.9°NCLIMGRID
1994Oct57.5°F56.3°F+1.1°NCLIMGRID
1994Nov51.2°F46.0°F+5.2°NCLIMGRID
1994Dec40.9°F36.2°F+4.7°NCLIMGRID
1995Jan34.0°F30.5°F+3.5°NCLIMGRID
1995Feb34.9°F34.6°F+0.3°NCLIMGRID
1995Mar47.7°F45.6°F+2.1°NCLIMGRID
1995Apr56.4°F55.6°F+0.9°NCLIMGRID
1995May64.1°F64.3°F-0.3°NCLIMGRID
1995Jun72.8°F73.1°F-0.3°NCLIMGRID
1995Jul77.3°F76.9°F+0.3°NCLIMGRID
1995Aug79.6°F75.1°F+4.5°NCLIMGRID
1995Sep66.5°F68.5°F-2.1°NCLIMGRID
1995Oct57.8°F56.3°F+1.4°NCLIMGRID
1995Nov41.1°F46.0°F-5.0°NCLIMGRID
1995Dec33.6°F36.2°F-2.6°NCLIMGRID
1996Jan31.7°F30.5°F+1.2°NCLIMGRID
1996Feb36.4°F34.6°F+1.8°NCLIMGRID
1996Mar38.7°F45.6°F-6.9°NCLIMGRID
1996Apr51.7°F55.6°F-3.9°NCLIMGRID
1996May67.3°F64.3°F+3.0°NCLIMGRID
1996Jun73.1°F73.1°F+0.0°NCLIMGRID
1996Jul74.5°F76.9°F-2.4°NCLIMGRID
1996Aug75.3°F75.1°F+0.2°NCLIMGRID
1996Sep66.5°F68.5°F-2.0°NCLIMGRID
1996Oct57.5°F56.3°F+1.2°NCLIMGRID
1996Nov40.7°F46.0°F-5.3°NCLIMGRID
1996Dec39.3°F36.2°F+3.1°NCLIMGRID
1997Jan29.9°F30.5°F-0.6°NCLIMGRID
1997Feb41.1°F34.6°F+6.4°NCLIMGRID
1997Mar47.4°F45.6°F+1.8°NCLIMGRID
1997Apr50.3°F55.6°F-5.2°NCLIMGRID
1997May60.0°F64.3°F-4.3°NCLIMGRID
1997Jun70.8°F73.1°F-2.4°NCLIMGRID
1997Jul77.1°F76.9°F+0.1°NCLIMGRID
1997Aug73.9°F75.1°F-1.2°NCLIMGRID
1997Sep68.0°F68.5°F-0.5°NCLIMGRID
1997Oct56.7°F56.3°F+0.4°NCLIMGRID
1997Nov42.1°F46.0°F-3.9°NCLIMGRID
1997Dec36.2°F36.2°F+0.0°NCLIMGRID
1998Jan40.7°F30.5°F+10.2°NCLIMGRID
1998Feb42.4°F34.6°F+7.8°NCLIMGRID
1998Mar46.1°F45.6°F+0.5°NCLIMGRID
1998Apr54.4°F55.6°F-1.2°NCLIMGRID
1998May68.5°F64.3°F+4.2°NCLIMGRID
1998Jun74.1°F73.1°F+1.0°NCLIMGRID
1998Jul76.8°F76.9°F-0.2°NCLIMGRID
1998Aug76.0°F75.1°F+0.9°NCLIMGRID
1998Sep73.1°F68.5°F+4.5°NCLIMGRID
1998Oct59.4°F56.3°F+3.1°NCLIMGRID
1998Nov48.1°F46.0°F+2.1°NCLIMGRID
1998Dec40.2°F36.2°F+4.0°NCLIMGRID
1999Jan35.2°F30.5°F+4.7°NCLIMGRID
1999Feb41.3°F34.6°F+6.7°NCLIMGRID
1999Mar41.4°F45.6°F-4.2°NCLIMGRID
1999Apr57.9°F55.6°F+2.4°NCLIMGRID
1999May65.3°F64.3°F+1.0°NCLIMGRID
1999Jun74.4°F73.1°F+1.2°NCLIMGRID
1999Jul79.8°F76.9°F+2.9°NCLIMGRID
1999Aug76.0°F75.1°F+0.9°NCLIMGRID
1999Sep69.0°F68.5°F+0.5°NCLIMGRID
1999Oct57.3°F56.3°F+0.9°NCLIMGRID
1999Nov52.3°F46.0°F+6.3°NCLIMGRID
1999Dec38.2°F36.2°F+2.0°NCLIMGRID
2000Jan33.5°F30.5°F+3.0°NCLIMGRID
2000Feb43.3°F34.6°F+8.6°NCLIMGRID
2000Mar49.4°F45.6°F+3.8°NCLIMGRID
2000Apr53.8°F55.6°F-1.7°NCLIMGRID
2000May67.1°F64.3°F+2.8°NCLIMGRID
2000Jun73.2°F73.1°F+0.1°NCLIMGRID
2000Jul74.8°F76.9°F-2.2°NCLIMGRID
2000Aug75.5°F75.1°F+0.4°NCLIMGRID
2000Sep67.1°F68.5°F-1.4°NCLIMGRID
2000Oct59.8°F56.3°F+3.5°NCLIMGRID
2000Nov43.8°F46.0°F-2.3°NCLIMGRID
2000Dec24.5°F36.2°F-11.7°NCLIMGRID
2001Jan30.8°F30.5°F+0.3°NCLIMGRID
2001Feb39.9°F34.6°F+5.3°NCLIMGRID
2001Mar40.5°F45.6°F-5.1°NCLIMGRID
2001Apr60.3°F55.6°F+4.7°NCLIMGRID
2001May66.6°F64.3°F+2.3°NCLIMGRID
2001Jun71.3°F73.1°F-1.9°NCLIMGRID
2001Jul76.7°F76.9°F-0.3°NCLIMGRID
2001Aug76.8°F75.1°F+1.7°NCLIMGRID
2001Sep66.7°F68.5°F-1.9°NCLIMGRID
2001Oct56.1°F56.3°F-0.2°NCLIMGRID
2001Nov51.3°F46.0°F+5.3°NCLIMGRID
2001Dec40.2°F36.2°F+4.1°NCLIMGRID
2002Jan38.1°F30.5°F+7.6°NCLIMGRID
2002Feb39.1°F34.6°F+4.4°NCLIMGRID
2002Mar44.6°F45.6°F-0.9°NCLIMGRID
2002Apr58.6°F55.6°F+3.0°NCLIMGRID
2002May62.9°F64.3°F-1.4°NCLIMGRID
2002Jun74.7°F73.1°F+1.6°NCLIMGRID
2002Jul78.8°F76.9°F+1.9°NCLIMGRID
2002Aug77.5°F75.1°F+2.4°NCLIMGRID
2002Sep72.0°F68.5°F+3.5°NCLIMGRID
2002Oct55.9°F56.3°F-0.4°NCLIMGRID
2002Nov43.1°F46.0°F-3.0°NCLIMGRID
2002Dec36.8°F36.2°F+0.6°NCLIMGRID
2003Jan29.0°F30.5°F-1.5°NCLIMGRID
2003Feb32.1°F34.6°F-2.6°NCLIMGRID
2003Mar47.7°F45.6°F+2.1°NCLIMGRID
2003Apr57.9°F55.6°F+2.4°NCLIMGRID
2003May64.2°F64.3°F-0.1°NCLIMGRID
2003Jun68.8°F73.1°F-4.4°NCLIMGRID
2003Jul75.7°F76.9°F-1.3°NCLIMGRID
2003Aug75.9°F75.1°F+0.8°NCLIMGRID
2003Sep66.1°F68.5°F-2.4°NCLIMGRID
2003Oct56.9°F56.3°F+0.6°NCLIMGRID
2003Nov50.5°F46.0°F+4.4°NCLIMGRID
2003Dec37.8°F36.2°F+1.6°NCLIMGRID
2004Jan31.4°F30.5°F+0.9°NCLIMGRID
2004Feb35.9°F34.6°F+1.3°NCLIMGRID
2004Mar49.3°F45.6°F+3.7°NCLIMGRID
2004Apr56.6°F55.6°F+1.0°NCLIMGRID
2004May69.3°F64.3°F+5.0°NCLIMGRID
2004Jun72.8°F73.1°F-0.3°NCLIMGRID
2004Jul74.5°F76.9°F-2.4°NCLIMGRID
2004Aug71.7°F75.1°F-3.4°NCLIMGRID
2004Sep68.8°F68.5°F+0.3°NCLIMGRID
2004Oct59.5°F56.3°F+3.2°NCLIMGRID
2004Nov50.3°F46.0°F+4.3°NCLIMGRID
2004Dec35.4°F36.2°F-0.8°NCLIMGRID
2005Jan38.6°F30.5°F+8.1°NCLIMGRID
2005Feb41.1°F34.6°F+6.4°NCLIMGRID
2005Mar42.7°F45.6°F-2.9°NCLIMGRID
2005Apr57.4°F55.6°F+1.8°NCLIMGRID
2005May63.2°F64.3°F-1.1°NCLIMGRID
2005Jun74.7°F73.1°F+1.6°NCLIMGRID
2005Jul76.7°F76.9°F-0.2°NCLIMGRID
2005Aug78.3°F75.1°F+3.2°NCLIMGRID
2005Sep71.2°F68.5°F+2.7°NCLIMGRID
2005Oct58.6°F56.3°F+2.2°NCLIMGRID
2005Nov49.4°F46.0°F+3.4°NCLIMGRID
2005Dec33.5°F36.2°F-2.6°NCLIMGRID
2006Jan43.6°F30.5°F+13.1°NCLIMGRID
2006Feb35.8°F34.6°F+1.2°NCLIMGRID
2006Mar46.3°F45.6°F+0.7°NCLIMGRID
2006Apr60.4°F55.6°F+4.8°NCLIMGRID
2006May62.9°F64.3°F-1.4°NCLIMGRID
2006Jun72.4°F73.1°F-0.7°NCLIMGRID
2006Jul76.9°F76.9°F-0.1°NCLIMGRID
2006Aug76.9°F75.1°F+1.8°NCLIMGRID
2006Sep64.1°F68.5°F-4.4°NCLIMGRID
2006Oct54.1°F56.3°F-2.3°NCLIMGRID
2006Nov46.5°F46.0°F+0.5°NCLIMGRID
2006Dec42.1°F36.2°F+5.9°NCLIMGRID
2007Jan37.9°F30.5°F+7.4°NCLIMGRID
2007Feb30.0°F34.6°F-4.7°NCLIMGRID
2007Mar53.0°F45.6°F+7.4°NCLIMGRID
2007Apr53.5°F55.6°F-2.0°NCLIMGRID
2007May68.5°F64.3°F+4.1°NCLIMGRID
2007Jun74.2°F73.1°F+1.0°NCLIMGRID
2007Jul74.4°F76.9°F-2.6°NCLIMGRID
2007Aug80.6°F75.1°F+5.5°NCLIMGRID
2007Sep71.9°F68.5°F+3.4°NCLIMGRID
2007Oct62.2°F56.3°F+5.8°NCLIMGRID
2007Nov46.2°F46.0°F+0.2°NCLIMGRID
2007Dec39.5°F36.2°F+3.3°NCLIMGRID
2008Jan33.6°F30.5°F+3.1°NCLIMGRID
2008Feb35.7°F34.6°F+1.0°NCLIMGRID
2008Mar43.9°F45.6°F-1.7°NCLIMGRID
2008Apr55.0°F55.6°F-0.5°NCLIMGRID
2008May61.8°F64.3°F-2.5°NCLIMGRID
2008Jun74.9°F73.1°F+1.7°NCLIMGRID
2008Jul75.5°F76.9°F-1.5°NCLIMGRID
2008Aug74.0°F75.1°F-1.1°NCLIMGRID
2008Sep71.0°F68.5°F+2.5°NCLIMGRID
2008Oct57.3°F56.3°F+0.9°NCLIMGRID
2008Nov43.6°F46.0°F-2.4°NCLIMGRID
2008Dec35.9°F36.2°F-0.3°NCLIMGRID
2009Jan28.9°F30.5°F-1.6°NCLIMGRID
2009Feb38.2°F34.6°F+3.5°NCLIMGRID
2009Mar48.5°F45.6°F+2.9°NCLIMGRID
2009Apr55.6°F55.6°F+0.1°NCLIMGRID
2009May64.5°F64.3°F+0.2°NCLIMGRID
2009Jun74.7°F73.1°F+1.6°NCLIMGRID
2009Jul71.5°F76.9°F-5.4°NCLIMGRID
2009Aug73.2°F75.1°F-1.9°NCLIMGRID
2009Sep68.3°F68.5°F-0.2°NCLIMGRID
2009Oct53.0°F56.3°F-3.4°NCLIMGRID
2009Nov50.1°F46.0°F+4.1°NCLIMGRID
2009Dec36.4°F36.2°F+0.2°NCLIMGRID
2010Jan29.1°F30.5°F-1.4°NCLIMGRID
2010Feb29.7°F34.6°F-4.9°NCLIMGRID
2010Mar46.7°F45.6°F+1.1°NCLIMGRID
2010Apr61.1°F55.6°F+5.6°NCLIMGRID
2010May67.5°F64.3°F+3.2°NCLIMGRID
2010Jun77.2°F73.1°F+4.1°NCLIMGRID
2010Jul78.4°F76.9°F+1.5°NCLIMGRID
2010Aug78.5°F75.1°F+3.4°NCLIMGRID
2010Sep70.5°F68.5°F+2.0°NCLIMGRID
2010Oct58.9°F56.3°F+2.6°NCLIMGRID
2010Nov47.2°F46.0°F+1.2°NCLIMGRID
2010Dec30.3°F36.2°F-5.8°NCLIMGRID
2011Jan30.7°F30.5°F+0.2°NCLIMGRID
2011Feb39.0°F34.6°F+4.3°NCLIMGRID
2011Mar48.2°F45.6°F+2.6°NCLIMGRID
2011Apr58.4°F55.6°F+2.8°NCLIMGRID
2011May64.3°F64.3°F+0.0°NCLIMGRID
2011Jun74.8°F73.1°F+1.6°NCLIMGRID
2011Jul80.0°F76.9°F+3.0°NCLIMGRID
2011Aug75.5°F75.1°F+0.4°NCLIMGRID
2011Sep66.6°F68.5°F-1.9°NCLIMGRID
2011Oct56.1°F56.3°F-0.2°NCLIMGRID
2011Nov50.3°F46.0°F+4.3°NCLIMGRID
2011Dec41.4°F36.2°F+5.2°NCLIMGRID
2012Jan38.5°F30.5°F+8.0°NCLIMGRID
2012Feb41.1°F34.6°F+6.4°NCLIMGRID
2012Mar58.9°F45.6°F+13.3°NCLIMGRID
2012Apr58.3°F55.6°F+2.7°NCLIMGRID
2012May70.1°F64.3°F+5.8°NCLIMGRID
2012Jun73.6°F73.1°F+0.4°NCLIMGRID
2012Jul82.0°F76.9°F+5.1°NCLIMGRID
2012Aug74.6°F75.1°F-0.5°NCLIMGRID
2012Sep67.0°F68.5°F-1.5°NCLIMGRID
2012Oct55.7°F56.3°F-0.6°NCLIMGRID
2012Nov43.3°F46.0°F-2.7°NCLIMGRID
2012Dec43.2°F36.2°F+7.0°NCLIMGRID
2013Jan35.8°F30.5°F+5.3°NCLIMGRID
2013Feb36.4°F34.6°F+1.7°NCLIMGRID
2013Mar39.5°F45.6°F-6.1°NCLIMGRID
2013Apr55.0°F55.6°F-0.6°NCLIMGRID
2013May65.8°F64.3°F+1.5°NCLIMGRID
2013Jun72.8°F73.1°F-0.3°NCLIMGRID
2013Jul73.5°F76.9°F-3.4°NCLIMGRID
2013Aug73.8°F75.1°F-1.3°NCLIMGRID
2013Sep69.1°F68.5°F+0.6°NCLIMGRID
2013Oct57.3°F56.3°F+1.0°NCLIMGRID
2013Nov43.4°F46.0°F-2.7°NCLIMGRID
2013Dec36.2°F36.2°F+0.1°NCLIMGRID
2014Jan27.8°F30.5°F-2.7°NCLIMGRID
2014Feb31.4°F34.6°F-3.2°NCLIMGRID
2014Mar41.5°F45.6°F-4.1°NCLIMGRID
2014Apr57.2°F55.6°F+1.6°NCLIMGRID
2014May65.9°F64.3°F+1.6°NCLIMGRID
2014Jun74.5°F73.1°F+1.4°NCLIMGRID
2014Jul72.0°F76.9°F-5.0°NCLIMGRID
2014Aug75.0°F75.1°F-0.1°NCLIMGRID
2014Sep66.8°F68.5°F-1.7°NCLIMGRID
2014Oct57.5°F56.3°F+1.1°NCLIMGRID
2014Nov40.2°F46.0°F-5.8°NCLIMGRID
2014Dec39.5°F36.2°F+3.3°NCLIMGRID
2015Jan31.6°F30.5°F+1.1°NCLIMGRID
2015Feb26.0°F34.6°F-8.7°NCLIMGRID
2015Mar43.4°F45.6°F-2.2°NCLIMGRID
2015Apr57.8°F55.6°F+2.2°NCLIMGRID
2015May67.7°F64.3°F+3.4°NCLIMGRID
2015Jun75.0°F73.1°F+1.9°NCLIMGRID
2015Jul77.6°F76.9°F+0.6°NCLIMGRID
2015Aug73.3°F75.1°F-1.8°NCLIMGRID
2015Sep71.0°F68.5°F+2.5°NCLIMGRID
2015Oct58.8°F56.3°F+2.5°NCLIMGRID
2015Nov51.2°F46.0°F+5.2°NCLIMGRID
2015Dec48.6°F36.2°F+12.4°NCLIMGRID
2016Jan31.1°F30.5°F+0.6°NCLIMGRID
2016Feb38.0°F34.6°F+3.3°NCLIMGRID
2016Mar51.8°F45.6°F+6.2°NCLIMGRID
2016Apr56.1°F55.6°F+0.5°NCLIMGRID
2016May62.1°F64.3°F-2.2°NCLIMGRID
2016Jun75.7°F73.1°F+2.5°NCLIMGRID
2016Jul76.8°F76.9°F-0.2°NCLIMGRID
2016Aug77.3°F75.1°F+2.2°NCLIMGRID
2016Sep71.6°F68.5°F+3.1°NCLIMGRID
2016Oct62.6°F56.3°F+6.2°NCLIMGRID
2016Nov49.3°F46.0°F+3.2°NCLIMGRID
2016Dec34.8°F36.2°F-1.3°NCLIMGRID
2017Jan38.4°F30.5°F+7.9°NCLIMGRID
2017Feb44.6°F34.6°F+9.9°NCLIMGRID
2017Mar47.5°F45.6°F+1.9°NCLIMGRID
2017Apr60.4°F55.6°F+4.8°NCLIMGRID
2017May64.5°F64.3°F+0.2°NCLIMGRID
2017Jun72.1°F73.1°F-1.1°NCLIMGRID
2017Jul76.9°F76.9°F+0.0°NCLIMGRID
2017Aug71.9°F75.1°F-3.2°NCLIMGRID
2017Sep67.7°F68.5°F-0.8°NCLIMGRID
2017Oct58.5°F56.3°F+2.2°NCLIMGRID
2017Nov45.2°F46.0°F-0.8°NCLIMGRID
2017Dec34.6°F36.2°F-1.6°NCLIMGRID
2018Jan27.4°F30.5°F-3.1°NCLIMGRID
2018Feb40.9°F34.6°F+6.3°NCLIMGRID
2018Mar43.0°F45.6°F-2.5°NCLIMGRID
2018Apr48.9°F55.6°F-6.7°NCLIMGRID
2018May71.4°F64.3°F+7.1°NCLIMGRID
2018Jun75.2°F73.1°F+2.1°NCLIMGRID
2018Jul75.8°F76.9°F-1.1°NCLIMGRID
2018Aug75.1°F75.1°F+0.0°NCLIMGRID
2018Sep71.5°F68.5°F+3.0°NCLIMGRID
2018Oct57.5°F56.3°F+1.1°NCLIMGRID
2018Nov40.0°F46.0°F-6.0°NCLIMGRID
2018Dec39.7°F36.2°F+3.5°NCLIMGRID
2019Jan33.4°F30.5°F+2.9°NCLIMGRID
2019Feb39.2°F34.6°F+4.6°NCLIMGRID
2019Mar41.1°F45.6°F-4.4°NCLIMGRID
2019Apr56.6°F55.6°F+1.1°NCLIMGRID
2019May67.0°F64.3°F+2.7°NCLIMGRID
2019Jun71.0°F73.1°F-2.2°NCLIMGRID
2019Jul76.3°F76.9°F-0.6°NCLIMGRID
2019Aug74.9°F75.1°F-0.2°NCLIMGRID
2019Sep73.9°F68.5°F+5.4°NCLIMGRID
2019Oct58.1°F56.3°F+1.8°NCLIMGRID
2019Nov39.0°F46.0°F-7.0°NCLIMGRID
2019Dec40.4°F36.2°F+4.2°NCLIMGRID
2020Jan38.3°F30.5°F+7.8°NCLIMGRID
2020Feb37.9°F34.6°F+3.2°NCLIMGRID
2020Mar48.8°F45.6°F+3.2°NCLIMGRID
2020Apr51.4°F55.6°F-4.2°NCLIMGRID
2020May61.7°F64.3°F-2.6°NCLIMGRID
2020Jun72.5°F73.1°F-0.6°NCLIMGRID
2020Jul77.4°F76.9°F+0.5°NCLIMGRID
2020Aug72.7°F75.1°F-2.4°NCLIMGRID
2020Sep67.0°F68.5°F-1.5°NCLIMGRID
2020Oct55.9°F56.3°F-0.5°NCLIMGRID
2020Nov48.8°F46.0°F+2.7°NCLIMGRID
2020Dec36.5°F36.2°F+0.4°NCLIMGRID
2021Jan33.7°F30.5°F+3.2°NCLIMGRID
2021Feb29.2°F34.6°F-5.4°NCLIMGRID
2021Mar49.5°F45.6°F+3.9°NCLIMGRID
2021Apr54.0°F55.6°F-1.6°NCLIMGRID
2021May61.2°F64.3°F-3.1°NCLIMGRID
2021Jun72.8°F73.1°F-0.3°NCLIMGRID
2021Jul75.0°F76.9°F-2.0°NCLIMGRID
2021Aug76.0°F75.1°F+0.9°NCLIMGRID
2021Sep68.4°F68.5°F-0.1°NCLIMGRID
2021Oct62.1°F56.3°F+5.7°NCLIMGRID
2021Nov41.7°F46.0°F-4.3°NCLIMGRID
2021Dec45.9°F36.2°F+9.7°NCLIMGRID
2022Jan29.3°F30.5°F-1.2°NCLIMGRID
2022Feb35.6°F34.6°F+1.0°NCLIMGRID
2022Mar47.2°F45.6°F+1.6°NCLIMGRID
2022Apr52.8°F55.6°F-2.8°NCLIMGRID
2022May67.5°F64.3°F+3.2°NCLIMGRID
2022Jun73.1°F73.1°F-0.1°NCLIMGRID
2022Jul77.4°F76.9°F+0.4°NCLIMGRID
2022Aug74.4°F75.1°F-0.7°NCLIMGRID
2022Sep67.2°F68.5°F-1.3°NCLIMGRID
2022Oct54.1°F56.3°F-2.3°NCLIMGRID
2022Nov44.9°F46.0°F-1.2°NCLIMGRID
2022Dec35.7°F36.2°F-0.4°NCLIMGRID
2023Jan40.5°F30.5°F+10.0°NCLIMGRID
2023Feb42.7°F34.6°F+8.0°NCLIMGRID
2023Mar45.0°F45.6°F-0.5°NCLIMGRID
2023Apr55.4°F55.6°F-0.2°NCLIMGRID
2023May63.5°F64.3°F-0.8°NCLIMGRID
2023Jun69.4°F73.1°F-3.8°NCLIMGRID
2023Jul75.6°F76.9°F-1.3°NCLIMGRID
2023Aug73.7°F75.1°F-1.4°NCLIMGRID
2023Sep68.8°F68.5°F+0.2°NCLIMGRID
2023Oct58.4°F56.3°F+2.0°NCLIMGRID
2023Nov46.2°F46.0°F+0.2°NCLIMGRID
2023Dec41.3°F36.2°F+5.2°NCLIMGRID
2024Jan30.7°F30.5°F+0.2°NCLIMGRID
2024Feb43.6°F34.6°F+9.0°NCLIMGRID
2024Mar49.6°F45.6°F+4.0°NCLIMGRID
2024Apr57.6°F55.6°F+2.1°NCLIMGRID
2024May67.7°F64.3°F+3.4°NCLIMGRID
2024Jun73.3°F73.1°F+0.2°NCLIMGRID
2024Jul75.1°F76.9°F-1.8°NCLIMGRID
2024Aug74.7°F75.1°F-0.4°NCLIMGRID
2024Sep70.0°F68.5°F+1.5°NCLIMGRID
2024Oct58.7°F56.3°F+2.4°NCLIMGRID
2024Nov50.0°F46.0°F+4.0°NCLIMGRID
2024Dec38.6°F36.2°F+2.5°NCLIMGRID
2025Jan27.1°F30.5°F-3.4°NCLIMGRID
2025Feb35.8°F34.6°F+1.2°NCLIMGRID
2025Mar50.0°F45.6°F+4.5°NCLIMGRID
2025Apr56.1°F55.6°F+0.5°NCLIMGRID
2025May62.8°F64.3°F-1.5°NCLIMGRID
2025Jun74.1°F73.1°F+0.9°NCLIMGRID
2025Jul79.1°F76.9°F+2.2°NCLIMGRID
2025Aug73.2°F75.1°F-1.9°NCLIMGRID
2025Sep69.2°F68.5°F+0.6°NCLIMGRID
2025Oct58.5°F56.3°F+2.2°NCLIMGRID
2025Nov45.3°F46.0°F-0.7°NCLIMGRID
2025Dec36.1°F36.2°F-0.1°NCLIMGRID
2026Jan29.4°F30.5°F-1.1°NCLIMGRID
2026Feb36.5°F34.6°F+1.9°NCLIMGRID

Showing 1,154 of 1,154 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 use NOAA's nClimGrid dataset, which provides homogenized temperature data on a 5km grid, for the nearest grid point with 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).

10

Initial gaps

0

Filled

10

Unfillable

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
January30.5°F26/26
February34.6°F26/26
March45.6°F26/26
April55.6°F26/26
May64.3°F26/26
June73.1°F26/26
July76.9°F26/26
August75.1°F26/26
September68.5°F26/26
October56.3°F26/26
November46.0°F26/26
December36.2°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

Frequently Asked Questions

Is Derby, Indiana getting warmer?

Based on 96+ years of NOAA temperature records, Derby has changed at a rate of approximately 0.03°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 Derby?

The warmest year on record in Derby was 2012, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Derby come from?

Data comes from the nClimGrid 5km Grid Point weather station, part of NOAA's Global Historical Climatology Network. This station has recorded 96+ years of temperature observations used to build Derby's climate profile.

How are the climate visualizations for Derby created?

Three visualizations are generated from Derby'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 Derby's temperature data?

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

Wear Derby's Climate Story

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

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