Climate Change in Altheimer, Arkansas

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

Based on our analysis of 96 years of temperature data near Altheimer, AR, this area shows relatively stable temperatures of approximately +0.1°F per decade. 10 of the last 10 years recorded above-average temperatures, and 2023 was the warmest year on record at +3.7°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.1°F

per decade

Warmest Year

2023

+3.7°F anomaly

Recent Warm Years

10 / 10

above-average years

Decade Shift

+0.5°F

2020s vs 1930s

Compared to the National Average

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

National: +0.20°F/decade
Altheimer: +0.06°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 Altheimer's long-term warming trend.

Temperature anomaly spiral for Altheimer, Arkansas
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Altheimer, AR.

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 Altheimer, Arkansas
Warming stripes: each stripe is one year of average temperature anomaly for Altheimer, AR.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.06°F per decade quantifies the rate of change.

Temperature trend chart for Altheimer, Arkansas
Linear trend: annual temperature anomalies with trend line for Altheimer, AR.

Temperature by Decade

1930s
+1.84°F
1940s
+0.69°F
1950s
+0.76°F
1960s
-0.25°F
1970s
-0.16°F
1980s
+0.12°F
1990s
+1.01°F
2000s
+1.08°F
2010s
+1.42°F
2020s
+2.43°F

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

Anomaly Scale

-4.3°F Colder Normal +6.3°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 Altheimer, AR. Filter by decade or download as CSV.

Data Sources & Audit

Station
nClimGrid 5km Grid Point
Distance
1.1 mi
Coverage
99.1%
Records
1,154
Range
1930-01 – 2026-02
Full Data Audit 1,154 records
YearMonthTempBaselineAnomalySourceGap
1930Jan36.8°F39.2°F-2.4°NCLIMGRID
1930Feb53.4°F44.1°F+9.3°NCLIMGRID
1930Mar52.3°F53.5°F-1.2°NCLIMGRID
1930Apr65.8°F62.6°F+3.3°NCLIMGRID
1930May70.9°F70.3°F+0.5°NCLIMGRID
1930Jun77.8°F78.0°F-0.3°NCLIMGRID
1930Jul86.1°F81.2°F+4.9°NCLIMGRID
1930Aug82.9°F79.7°F+3.2°NCLIMGRID
1930Sep76.9°F73.4°F+3.5°NCLIMGRID
1930Oct61.0°F62.5°F-1.5°NCLIMGRID
1930Nov51.3°F51.8°F-0.4°NCLIMGRID
1930Dec41.4°F43.4°F-2.0°NCLIMGRID
1931Jan43.2°F39.2°F+4.0°NCLIMGRID
1931Feb49.5°F44.1°F+5.4°NCLIMGRID
1931Mar48.6°F53.5°F-4.9°NCLIMGRID
1931Apr60.9°F62.6°F-1.7°NCLIMGRID
1931May66.7°F70.3°F-3.6°NCLIMGRID
1931Jun79.5°F78.0°F+1.5°NCLIMGRID
1931Jul81.3°F81.2°F+0.0°NCLIMGRID
1931Aug77.7°F79.7°F-2.0°NCLIMGRID
1931Sep79.2°F73.4°F+5.8°NCLIMGRID
1931Oct68.0°F62.5°F+5.5°NCLIMGRID
1931Nov58.3°F51.8°F+6.5°NCLIMGRID
1931Dec50.2°F43.4°F+6.8°NCLIMGRID
1932Jan48.0°F39.2°F+8.8°NCLIMGRID
1932Feb53.0°F44.1°F+8.9°NCLIMGRID
1932Mar50.2°F53.5°F-3.2°NCLIMGRID
1932Apr65.5°F62.6°F+2.9°NCLIMGRID
1932May70.2°F70.3°F-0.1°NCLIMGRID
1932Jun80.0°F78.0°F+2.0°NCLIMGRID
1932Jul83.2°F81.2°F+2.0°NCLIMGRID
1932Aug83.6°F79.7°F+3.9°NCLIMGRID
1932Sep74.9°F73.4°F+1.5°NCLIMGRID
1932Oct62.2°F62.5°F-0.3°NCLIMGRID
1932Nov47.5°F51.8°F-4.3°NCLIMGRID
1932Dec40.6°F43.4°F-2.9°NCLIMGRID
1933Jan50.6°F39.2°F+11.4°NCLIMGRID
1933Feb43.5°F44.1°F-0.6°NCLIMGRID
1933Mar55.0°F53.5°F+1.5°NCLIMGRID
1933Apr62.7°F62.6°F+0.2°NCLIMGRID
1933May73.6°F70.3°F+3.3°NCLIMGRID
1933Jun79.2°F78.0°F+1.1°NCLIMGRID
1933Jul81.6°F81.2°F+0.4°NCLIMGRID
1933Aug80.5°F79.7°F+0.8°NCLIMGRID
1933Sep80.1°F73.4°F+6.7°NCLIMGRID
1933Oct64.0°F62.5°F+1.5°NCLIMGRID
1933Nov54.3°F51.8°F+2.5°NCLIMGRID
1933Dec51.7°F43.4°F+8.3°NCLIMGRID
1934Jan46.2°F39.2°F+7.0°NCLIMGRID
1934Feb42.8°F44.1°F-1.3°NCLIMGRID
1934Mar51.1°F53.5°F-2.3°NCLIMGRID
1934Apr63.8°F62.6°F+1.3°NCLIMGRID
1934May71.4°F70.3°F+1.1°NCLIMGRID
1934Jun81.1°F78.0°F+3.0°NCLIMGRID
1934Jul84.9°F81.2°F+3.6°NCLIMGRID
1934Aug85.8°F79.7°F+6.2°NCLIMGRID
1934Sep73.9°F73.4°F+0.6°NCLIMGRID
1934Oct68.1°F62.5°F+5.6°NCLIMGRID
1934Nov54.8°F51.8°F+3.1°NCLIMGRID
1934Dec43.4°F43.4°F+0.0°NCLIMGRID
1935Jan45.1°F39.2°F+5.9°NCLIMGRID
1935Feb47.2°F44.1°F+3.1°NCLIMGRID
1935Mar61.0°F53.5°F+7.5°NCLIMGRID
1935Apr61.4°F62.6°F-1.1°NCLIMGRID
1935May68.9°F70.3°F-1.4°NCLIMGRID
1935Jun76.6°F78.0°F-1.5°NCLIMGRID
1935Jul83.1°F81.2°F+1.9°NCLIMGRID
1935Aug83.2°F79.7°F+3.6°NCLIMGRID
1935Sep73.8°F73.4°F+0.4°NCLIMGRID
1935Oct65.7°F62.5°F+3.2°NCLIMGRID
1935Nov51.2°F51.8°F-0.5°NCLIMGRID
1935Dec38.7°F43.4°F-4.7°NCLIMGRID
1936Jan38.9°F39.2°F-0.3°NCLIMGRID
1936Feb38.1°F44.1°F-6.0°NCLIMGRID
1936Mar58.2°F53.5°F+4.8°NCLIMGRID
1936Apr61.1°F62.6°F-1.5°NCLIMGRID
1936May72.0°F70.3°F+1.6°NCLIMGRID
1936Jun81.0°F78.0°F+2.9°NCLIMGRID
1936Jul81.7°F81.2°F+0.5°NCLIMGRID
1936Aug84.1°F79.7°F+4.4°NCLIMGRID
1936Sep80.5°F73.4°F+7.2°NCLIMGRID
1936Oct62.3°F62.5°F-0.2°NCLIMGRID
1936Nov49.3°F51.8°F-2.5°NCLIMGRID
1936Dec46.1°F43.4°F+2.7°NCLIMGRID
1937Jan44.2°F39.2°F+5.0°NCLIMGRID
1937Feb44.7°F44.1°F+0.6°NCLIMGRID
1937Mar49.5°F53.5°F-4.0°NCLIMGRID
1937Apr62.6°F62.6°F+0.1°NCLIMGRID
1937May72.6°F70.3°F+2.3°NCLIMGRID
1937Jun80.3°F78.0°F+2.2°NCLIMGRID
1937Jul81.1°F81.2°F-0.2°NCLIMGRID
1937Aug83.1°F79.7°F+3.4°NCLIMGRID
1937Sep73.9°F73.4°F+0.6°NCLIMGRID
1937Oct61.3°F62.5°F-1.2°NCLIMGRID
1937Nov48.6°F51.8°F-3.1°NCLIMGRID
1937Dec43.6°F43.4°F+0.2°NCLIMGRID
1938Jan43.5°F39.2°F+4.3°NCLIMGRID
1938Feb51.8°F44.1°F+7.7°NCLIMGRID
1938Mar61.0°F53.5°F+7.6°NCLIMGRID
1938Apr63.1°F62.6°F+0.5°NCLIMGRID
1938May71.6°F70.3°F+1.2°NCLIMGRID
1938Jun76.8°F78.0°F-1.2°NCLIMGRID
1938Jul83.1°F81.2°F+1.9°NCLIMGRID
1938Aug83.9°F79.7°F+4.2°NCLIMGRID
1938Sep76.7°F73.4°F+3.3°NCLIMGRID
1938Oct67.4°F62.5°F+4.9°NCLIMGRID
1938Nov51.7°F51.8°F-0.1°NCLIMGRID
1938Dec44.5°F43.4°F+1.1°NCLIMGRID
1939Jan46.3°F39.2°F+7.1°NCLIMGRID
1939Feb45.8°F44.1°F+1.7°NCLIMGRID
1939Mar56.6°F53.5°F+3.2°NCLIMGRID
1939Apr59.8°F62.6°F-2.8°NCLIMGRID
1939May70.4°F70.3°F+0.0°NCLIMGRID
1939Jun79.3°F78.0°F+1.3°NCLIMGRID
1939Jul82.2°F81.2°F+0.9°NCLIMGRID
1939Aug81.7°F79.7°F+2.1°NCLIMGRID
1939Sep80.4°F73.4°F+7.0°NCLIMGRID
1939Oct66.0°F62.5°F+3.5°NCLIMGRID
1939Nov49.6°F51.8°F-2.2°NCLIMGRID
1939Dec46.8°F43.4°F+3.4°NCLIMGRID
1940Jan29.3°F39.2°F-9.9°NCLIMGRID
1940Feb42.7°F44.1°F-1.4°NCLIMGRID
1940Mar53.5°F53.5°F+0.1°NCLIMGRID
1940Apr60.9°F62.6°F-1.7°NCLIMGRID
1940May67.6°F70.3°F-2.7°NCLIMGRID
1940Jun76.4°F78.0°F-1.7°NCLIMGRID
1940Jul78.9°F81.2°F-2.3°NCLIMGRID
1940Aug79.5°F79.7°F-0.2°NCLIMGRID
1940Sep72.5°F73.4°F-0.9°NCLIMGRID
1940Oct65.3°F62.5°F+2.8°NCLIMGRID
1940Nov49.8°F51.8°F-1.9°NCLIMGRID
1940Dec47.5°F43.4°F+4.1°NCLIMGRID
1941Jan44.2°F39.2°F+5.0°NCLIMGRID
1941Feb41.4°F44.1°F-2.7°NCLIMGRID
1941Mar48.6°F53.5°F-4.9°NCLIMGRID
1941Apr64.5°F62.6°F+1.9°NCLIMGRID
1941May72.4°F70.3°F+2.0°NCLIMGRID
1941Jun78.0°F78.0°F+0.0°NCLIMGRID
1941Jul81.8°F81.2°F+0.5°NCLIMGRID
1941Aug82.1°F79.7°F+2.4°NCLIMGRID
1941Sep76.7°F73.4°F+3.4°NCLIMGRID
1941Oct69.7°F62.5°F+7.2°NCLIMGRID
1941Nov49.7°F51.8°F-2.0°NCLIMGRID
1941Dec45.3°F43.4°F+1.9°NCLIMGRID
1942Jan38.8°F39.2°F-0.4°NCLIMGRID
1942Feb41.7°F44.1°F-2.4°NCLIMGRID
1942Mar54.4°F53.5°F+1.0°NCLIMGRID
1942Apr63.5°F62.6°F+0.9°NCLIMGRID
1942May69.8°F70.3°F-0.5°NCLIMGRID
1942Jun79.0°F78.0°F+0.9°NCLIMGRID
1942Jul82.6°F81.2°F+1.3°NCLIMGRID
1942Aug80.3°F79.7°F+0.6°NCLIMGRID
1942Sep73.0°F73.4°F-0.4°NCLIMGRID
1942Oct64.0°F62.5°F+1.5°NCLIMGRID
1942Nov55.1°F51.8°F+3.3°NCLIMGRID
1942Dec44.1°F43.4°F+0.7°NCLIMGRID
1943Jan42.4°F39.2°F+3.2°NCLIMGRID
1943Feb49.0°F44.1°F+4.9°NCLIMGRID
1943Mar48.5°F53.5°F-4.9°NCLIMGRID
1943Apr63.9°F62.6°F+1.4°NCLIMGRID
1943May73.8°F70.3°F+3.4°NCLIMGRID
1943Jun82.5°F78.0°F+4.5°NCLIMGRID
1943Jul84.5°F81.2°F+3.2°NCLIMGRID
1943Aug86.3°F79.7°F+6.6°NCLIMGRID
1943Sep72.9°F73.4°F-0.5°NCLIMGRID
1943Oct62.3°F62.5°F-0.2°NCLIMGRID
1943Nov49.6°F51.8°F-2.2°NCLIMGRID
1943Dec42.2°F43.4°F-1.2°NCLIMGRID
1944Jan43.0°F39.2°F+3.8°NCLIMGRID
1944Feb49.7°F44.1°F+5.6°NCLIMGRID
1944Mar53.1°F53.5°F-0.4°NCLIMGRID
1944Apr61.1°F62.6°F-1.5°NCLIMGRID
1944May71.8°F70.3°F+1.4°NCLIMGRID
1944Jun81.2°F78.0°F+3.1°NCLIMGRID
1944Jul82.8°F81.2°F+1.5°NCLIMGRID
1944Aug81.7°F79.7°F+2.0°NCLIMGRID
1944Sep75.3°F73.4°F+2.0°NCLIMGRID
1944Oct64.3°F62.5°F+1.8°NCLIMGRID
1944Nov53.0°F51.8°F+1.2°NCLIMGRID
1944Dec39.0°F43.4°F-4.4°NCLIMGRID
1945Jan41.7°F39.2°F+2.5°NCLIMGRID
1945Feb45.6°F44.1°F+1.5°NCLIMGRID
1945Mar60.6°F53.5°F+7.1°NCLIMGRID
1945Apr64.4°F62.6°F+1.9°NCLIMGRID
1945May67.9°F70.3°F-2.4°NCLIMGRID
1945Jun77.3°F78.0°F-0.7°NCLIMGRID
1945Jul79.9°F81.2°F-1.4°NCLIMGRID
1945Aug80.2°F79.7°F+0.5°NCLIMGRID
1945Sep75.7°F73.4°F+2.4°NCLIMGRID
1945Oct61.3°F62.5°F-1.2°NCLIMGRID
1945Nov54.1°F51.8°F+2.3°NCLIMGRID
1945Dec38.9°F43.4°F-4.5°NCLIMGRID
1946Jan41.9°F39.2°F+2.7°NCLIMGRID
1946Feb48.4°F44.1°F+4.3°NCLIMGRID
1946Mar58.4°F53.5°F+4.9°NCLIMGRID
1946Apr65.9°F62.6°F+3.4°NCLIMGRID
1946May68.1°F70.3°F-2.3°NCLIMGRID
1946Jun77.3°F78.0°F-0.8°NCLIMGRID
1946Jul81.4°F81.2°F+0.2°NCLIMGRID
1946Aug79.7°F79.7°F+0.1°NCLIMGRID
1946Sep73.1°F73.4°F-0.2°NCLIMGRID
1946Oct64.1°F62.5°F+1.6°NCLIMGRID
1946Nov55.1°F51.8°F+3.4°NCLIMGRID
1946Dec49.7°F43.4°F+6.3°NCLIMGRID
1947Jan44.2°F39.2°F+5.0°NCLIMGRID
1947Feb38.3°F44.1°F-5.8°NCLIMGRID
1947Mar45.9°F53.5°F-7.5°NCLIMGRID
1947Apr62.9°F62.6°F+0.3°NCLIMGRID
1947May68.8°F70.3°F-1.5°NCLIMGRID
1947Jun77.8°F78.0°F-0.2°NCLIMGRID
1947Jul79.3°F81.2°F-2.0°NCLIMGRID
1947Aug85.0°F79.7°F+5.3°NCLIMGRID
1947Sep76.5°F73.4°F+3.1°NCLIMGRID
1947Oct69.2°F62.5°F+6.7°NCLIMGRID
1947Nov48.5°F51.8°F-3.3°NCLIMGRID
1947Dec44.6°F43.4°F+1.2°NCLIMGRID
1948Jan33.5°F39.2°F-5.7°NCLIMGRID
1948Feb41.4°F44.1°F-2.7°NCLIMGRID
1948Mar52.2°F53.5°F-1.3°NCLIMGRID
1948Apr67.2°F62.6°F+4.6°NCLIMGRID
1948May70.4°F70.3°F+0.0°NCLIMGRID
1948Jun79.4°F78.0°F+1.4°NCLIMGRID
1948Jul82.0°F81.2°F+0.8°NCLIMGRID
1948Aug79.0°F79.7°F-0.7°NCLIMGRID
1948Sep73.4°F73.4°F+0.0°NCLIMGRID
1948Oct60.8°F62.5°F-1.7°NCLIMGRID
1948Nov51.4°F51.8°F-0.3°NCLIMGRID
1948Dec46.0°F43.4°F+2.6°NCLIMGRID
1949Jan44.2°F39.2°F+5.0°NCLIMGRID
1949Feb47.6°F44.1°F+3.5°NCLIMGRID
1949Mar51.9°F53.5°F-1.6°NCLIMGRID
1949Apr60.9°F62.6°F-1.6°NCLIMGRID
1949May73.1°F70.3°F+2.8°NCLIMGRID
1949Jun79.1°F78.0°F+1.0°NCLIMGRID
1949Jul82.4°F81.2°F+1.1°NCLIMGRID
1949Aug79.3°F79.7°F-0.4°NCLIMGRID
1949Sep70.5°F73.4°F-2.8°NCLIMGRID
1949Oct64.7°F62.5°F+2.2°NCLIMGRID
1949Nov53.0°F51.8°F+1.3°NCLIMGRID
1949Dec46.5°F43.4°F+3.1°NCLIMGRID
1950Jan50.1°F39.2°F+10.9°NCLIMGRID
1950Feb48.5°F44.1°F+4.4°NCLIMGRID
1950Mar50.7°F53.5°F-2.8°NCLIMGRID
1950Apr59.8°F62.6°F-2.7°NCLIMGRID
1950May72.0°F70.3°F+1.7°NCLIMGRID
1950Jun77.8°F78.0°F-0.3°NCLIMGRID
1950Jul79.4°F81.2°F-1.8°NCLIMGRID
1950Aug77.5°F79.7°F-2.2°NCLIMGRID
1950Sep71.0°F73.4°F-2.4°NCLIMGRID
1950Oct66.8°F62.5°F+4.4°NCLIMGRID
1950Nov47.9°F51.8°F-3.9°NCLIMGRID
1950Dec39.0°F43.4°F-4.4°NCLIMGRID
1951Jan43.5°F39.2°F+4.3°NCLIMGRID
1951Feb45.3°F44.1°F+1.2°NCLIMGRID
1951Mar53.2°F53.5°F-0.3°NCLIMGRID
1951Apr59.7°F62.6°F-2.8°NCLIMGRID
1951May71.0°F70.3°F+0.7°NCLIMGRID
1951Jun78.1°F78.0°F+0.0°NCLIMGRID
1951Jul82.1°F81.2°F+0.9°NCLIMGRID
1951Aug82.9°F79.7°F+3.2°NCLIMGRID
1951Sep73.7°F73.4°F+0.4°NCLIMGRID
1951Oct63.8°F62.5°F+1.3°NCLIMGRID
1951Nov45.7°F51.8°F-6.1°NCLIMGRID
1951Dec46.5°F43.4°F+3.1°NCLIMGRID
1952Jan48.5°F39.2°F+9.3°NCLIMGRID
1952Feb49.7°F44.1°F+5.6°NCLIMGRID
1952Mar51.1°F53.5°F-2.4°NCLIMGRID
1952Apr59.2°F62.6°F-3.3°NCLIMGRID
1952May70.5°F70.3°F+0.2°NCLIMGRID
1952Jun83.5°F78.0°F+5.5°NCLIMGRID
1952Jul84.0°F81.2°F+2.7°NCLIMGRID
1952Aug82.1°F79.7°F+2.4°NCLIMGRID
1952Sep72.3°F73.4°F-1.0°NCLIMGRID
1952Oct55.7°F62.5°F-6.8°NCLIMGRID
1952Nov49.9°F51.8°F-1.9°NCLIMGRID
1952Dec43.9°F43.4°F+0.5°NCLIMGRID
1953Jan46.9°F39.2°F+7.7°NCLIMGRID
1953Feb46.4°F44.1°F+2.3°NCLIMGRID
1953Mar57.3°F53.5°F+3.8°NCLIMGRID
1953Apr58.8°F62.6°F-3.7°NCLIMGRID
1953May71.9°F70.3°F+1.6°NCLIMGRID
1953Jun84.3°F78.0°F+6.2°NCLIMGRID
1953Jul81.3°F81.2°F+0.1°NCLIMGRID
1953Aug80.8°F79.7°F+1.1°NCLIMGRID
1953Sep75.4°F73.4°F+2.1°NCLIMGRID
1953Oct65.1°F62.5°F+2.6°NCLIMGRID
1953Nov50.4°F51.8°F-1.4°NCLIMGRID
1953Dec41.5°F43.4°F-1.9°NCLIMGRID
1954Jan42.8°F39.2°F+3.6°NCLIMGRID
1954Feb51.7°F44.1°F+7.6°NCLIMGRID
1954Mar52.8°F53.5°F-0.6°NCLIMGRID
1954Apr67.2°F62.6°F+4.6°NCLIMGRID
1954May66.6°F70.3°F-3.8°NCLIMGRID
1954Jun81.3°F78.0°F+3.3°NCLIMGRID
1954Jul85.7°F81.2°F+4.5°NCLIMGRID
1954Aug86.6°F79.7°F+7.0°NCLIMGRID
1954Sep78.0°F73.4°F+4.7°NCLIMGRID
1954Oct64.9°F62.5°F+2.4°NCLIMGRID
1954Nov50.9°F51.8°F-0.9°NCLIMGRID
1954Dec43.8°F43.4°F+0.4°NCLIMGRID
1955Jan42.4°F39.2°F+3.2°NCLIMGRID
1955Feb44.9°F44.1°F+0.7°NCLIMGRID
1955Mar54.5°F53.5°F+1.0°NCLIMGRID
1955Apr66.1°F62.6°F+3.5°NCLIMGRID
1955May73.1°F70.3°F+2.8°NCLIMGRID
1955Jun74.6°F78.0°F-3.5°NCLIMGRID
1955Jul82.7°F81.2°F+1.5°NCLIMGRID
1955Aug81.0°F79.7°F+1.3°NCLIMGRID
1955Sep77.0°F73.4°F+3.6°NCLIMGRID
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1984Apr60.3°F62.6°F-2.3°NCLIMGRID
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1985Apr64.0°F62.6°F+1.5°NCLIMGRID
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1987Jan40.6°F39.2°F+1.4°NCLIMGRID
1987Feb47.6°F44.1°F+3.5°NCLIMGRID
1987Mar54.0°F53.5°F+0.6°NCLIMGRID
1987Apr62.2°F62.6°F-0.3°NCLIMGRID
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1987Jun78.9°F78.0°F+0.8°NCLIMGRID
1987Jul81.2°F81.2°F+0.0°NCLIMGRID
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1987Nov53.5°F51.8°F+1.7°NCLIMGRID
1987Dec45.9°F43.4°F+2.5°NCLIMGRID
1988Jan35.9°F39.2°F-3.3°NCLIMGRID
1988Feb43.5°F44.1°F-0.6°NCLIMGRID
1988Mar52.0°F53.5°F-1.4°NCLIMGRID
1988Apr62.0°F62.6°F-0.6°NCLIMGRID
1988May70.4°F70.3°F+0.1°NCLIMGRID
1988Jun78.3°F78.0°F+0.2°NCLIMGRID
1988Jul80.7°F81.2°F-0.5°NCLIMGRID
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1988Sep75.1°F73.4°F+1.7°NCLIMGRID
1988Oct59.6°F62.5°F-2.9°NCLIMGRID
1988Nov53.3°F51.8°F+1.6°NCLIMGRID
1988Dec44.9°F43.4°F+1.5°NCLIMGRID
1989Jan46.3°F39.2°F+7.1°NCLIMGRID
1989Feb39.2°F44.1°F-4.9°NCLIMGRID
1989Mar52.8°F53.5°F-0.7°NCLIMGRID
1989Apr62.0°F62.6°F-0.5°NCLIMGRID
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1989Jul78.6°F81.2°F-2.7°NCLIMGRID
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1989Oct63.2°F62.5°F+0.7°NCLIMGRID
1989Nov54.8°F51.8°F+3.1°NCLIMGRID
1989Dec35.5°F43.4°F-7.9°NCLIMGRID
1990Jan47.6°F39.2°F+8.4°NCLIMGRID
1990Feb51.7°F44.1°F+7.6°NCLIMGRID
1990Mar54.9°F53.5°F+1.4°NCLIMGRID
1990Apr61.4°F62.6°F-1.1°NCLIMGRID
1990May68.3°F70.3°F-2.1°NCLIMGRID
1990Jun80.0°F78.0°F+2.0°NCLIMGRID
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1990Nov56.6°F51.8°F+4.9°NCLIMGRID
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1991Jan39.6°F39.2°F+0.4°NCLIMGRID
1991Feb48.2°F44.1°F+4.1°NCLIMGRID
1991Mar56.1°F53.5°F+2.6°NCLIMGRID
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1991Nov48.9°F51.8°F-2.9°NCLIMGRID
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1997Jan41.0°F39.2°F+1.8°NCLIMGRID
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1997Mar57.4°F53.5°F+3.9°NCLIMGRID
1997Apr58.2°F62.6°F-4.4°NCLIMGRID
1997May68.0°F70.3°F-2.3°NCLIMGRID
1997Jun76.0°F78.0°F-2.1°NCLIMGRID
1997Jul83.2°F81.2°F+1.9°NCLIMGRID
1997Aug78.7°F79.7°F-1.0°NCLIMGRID
1997Sep75.2°F73.4°F+1.9°NCLIMGRID
1997Oct62.7°F62.5°F+0.2°NCLIMGRID
1997Nov49.0°F51.8°F-2.7°NCLIMGRID
1997Dec42.8°F43.4°F-0.6°NCLIMGRID
1998Jan46.2°F39.2°F+7.0°NCLIMGRID
1998Feb48.7°F44.1°F+4.6°NCLIMGRID
1998Mar52.0°F53.5°F-1.4°NCLIMGRID
1998Apr62.0°F62.6°F-0.6°NCLIMGRID
1998May75.2°F70.3°F+4.9°NCLIMGRID
1998Jun82.2°F78.0°F+4.1°NCLIMGRID
1998Jul85.2°F81.2°F+4.0°NCLIMGRID
1998Aug82.1°F79.7°F+2.4°NCLIMGRID
1998Sep78.9°F73.4°F+5.5°NCLIMGRID
1998Oct65.9°F62.5°F+3.5°NCLIMGRID
1998Nov54.9°F51.8°F+3.1°NCLIMGRID
1998Dec45.6°F43.4°F+2.1°NCLIMGRID
1999Jan45.1°F39.2°F+5.9°NCLIMGRID
1999Feb51.8°F44.1°F+7.7°NCLIMGRID
1999Mar50.7°F53.5°F-2.8°NCLIMGRID
1999Apr66.0°F62.6°F+3.4°NCLIMGRID
1999May70.9°F70.3°F+0.6°NCLIMGRID
1999Jun78.4°F78.0°F+0.4°NCLIMGRID
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1999Oct63.3°F62.5°F+0.8°NCLIMGRID
1999Nov56.4°F51.8°F+4.6°NCLIMGRID
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2000Jan43.0°F39.2°F+3.8°NCLIMGRID
2000Feb50.7°F44.1°F+6.6°NCLIMGRID
2000Mar56.8°F53.5°F+3.4°NCLIMGRID
2000Apr60.8°F62.6°F-1.8°NCLIMGRID
2000May72.7°F70.3°F+2.4°NCLIMGRID
2000Jun77.6°F78.0°F-0.4°NCLIMGRID
2000Jul82.1°F81.2°F+0.9°NCLIMGRID
2000Aug85.2°F79.7°F+5.5°NCLIMGRID
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2000Oct65.2°F62.5°F+2.7°NCLIMGRID
2000Nov49.0°F51.8°F-2.8°NCLIMGRID
2000Dec33.3°F43.4°F-10.1°NCLIMGRID
2001Jan38.4°F39.2°F-0.8°NCLIMGRID
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2001Mar49.4°F53.5°F-4.0°NCLIMGRID
2001Apr66.9°F62.6°F+4.4°NCLIMGRID
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2001Nov56.3°F51.8°F+4.5°NCLIMGRID
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2002Jan45.4°F39.2°F+6.2°NCLIMGRID
2002Feb43.9°F44.1°F-0.2°NCLIMGRID
2002Mar50.3°F53.5°F-3.1°NCLIMGRID
2002Apr65.4°F62.6°F+2.8°NCLIMGRID
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2002Jun78.6°F78.0°F+0.5°NCLIMGRID
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2002Oct62.5°F62.5°F+0.1°NCLIMGRID
2002Nov49.9°F51.8°F-1.8°NCLIMGRID
2002Dec44.6°F43.4°F+1.2°NCLIMGRID
2003Jan38.5°F39.2°F-0.7°NCLIMGRID
2003Feb41.6°F44.1°F-2.5°NCLIMGRID
2003Mar52.3°F53.5°F-1.2°NCLIMGRID
2003Apr63.2°F62.6°F+0.6°NCLIMGRID
2003May72.1°F70.3°F+1.7°NCLIMGRID
2003Jun75.0°F78.0°F-3.1°NCLIMGRID
2003Jul80.9°F81.2°F-0.3°NCLIMGRID
2003Aug82.0°F79.7°F+2.3°NCLIMGRID
2003Sep72.4°F73.4°F-1.0°NCLIMGRID
2003Oct64.8°F62.5°F+2.3°NCLIMGRID
2003Nov56.5°F51.8°F+4.7°NCLIMGRID
2003Dec44.2°F43.4°F+0.8°NCLIMGRID
2004Jan43.6°F39.2°F+4.4°NCLIMGRID
2004Feb42.6°F44.1°F-1.5°NCLIMGRID
2004Mar58.3°F53.5°F+4.9°NCLIMGRID
2004Apr62.0°F62.6°F-0.6°NCLIMGRID
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2004Jun77.4°F78.0°F-0.6°NCLIMGRID
2004Jul79.5°F81.2°F-1.7°NCLIMGRID
2004Aug76.7°F79.7°F-3.0°NCLIMGRID
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2004Oct68.3°F62.5°F+5.8°NCLIMGRID
2004Nov55.8°F51.8°F+4.1°NCLIMGRID
2004Dec44.1°F43.4°F+0.7°NCLIMGRID
2005Jan46.6°F39.2°F+7.4°NCLIMGRID
2005Feb49.1°F44.1°F+5.0°NCLIMGRID
2005Mar52.7°F53.5°F-0.7°NCLIMGRID
2005Apr62.9°F62.6°F+0.3°NCLIMGRID
2005May69.7°F70.3°F-0.7°NCLIMGRID
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2005Jul81.0°F81.2°F-0.2°NCLIMGRID
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2005Sep78.1°F73.4°F+4.7°NCLIMGRID
2005Oct63.1°F62.5°F+0.6°NCLIMGRID
2005Nov55.9°F51.8°F+4.1°NCLIMGRID
2005Dec43.0°F43.4°F-0.4°NCLIMGRID
2006Jan49.2°F39.2°F+10.0°NCLIMGRID
2006Feb42.4°F44.1°F-1.7°NCLIMGRID
2006Mar55.2°F53.5°F+1.8°NCLIMGRID
2006Apr67.9°F62.6°F+5.3°NCLIMGRID
2006May71.5°F70.3°F+1.2°NCLIMGRID
2006Jun78.2°F78.0°F+0.1°NCLIMGRID
2006Jul81.8°F81.2°F+0.6°NCLIMGRID
2006Aug83.2°F79.7°F+3.5°NCLIMGRID
2006Sep71.7°F73.4°F-1.6°NCLIMGRID
2006Oct62.5°F62.5°F+0.0°NCLIMGRID
2006Nov52.8°F51.8°F+1.0°NCLIMGRID
2006Dec47.4°F43.4°F+4.0°NCLIMGRID
2007Jan42.1°F39.2°F+2.9°NCLIMGRID
2007Feb43.2°F44.1°F-0.9°NCLIMGRID
2007Mar61.5°F53.5°F+8.1°NCLIMGRID
2007Apr58.9°F62.6°F-3.7°NCLIMGRID
2007May72.8°F70.3°F+2.4°NCLIMGRID
2007Jun79.1°F78.0°F+1.1°NCLIMGRID
2007Jul78.9°F81.2°F-2.3°NCLIMGRID
2007Aug84.7°F79.7°F+5.0°NCLIMGRID
2007Sep75.4°F73.4°F+2.0°NCLIMGRID
2007Oct65.0°F62.5°F+2.6°NCLIMGRID
2007Nov54.0°F51.8°F+2.3°NCLIMGRID
2007Dec47.1°F43.4°F+3.7°NCLIMGRID
2008Jan41.1°F39.2°F+1.9°NCLIMGRID
2008Feb46.7°F44.1°F+2.6°NCLIMGRID
2008Mar53.8°F53.5°F+0.3°NCLIMGRID
2008Apr60.3°F62.6°F-2.3°NCLIMGRID
2008May70.8°F70.3°F+0.4°NCLIMGRID
2008Jun79.5°F78.0°F+1.5°NCLIMGRID
2008Jul82.4°F81.2°F+1.2°NCLIMGRID
2008Aug78.7°F79.7°F-1.0°NCLIMGRID
2008Sep72.6°F73.4°F-0.8°NCLIMGRID
2008Oct61.8°F62.5°F-0.7°NCLIMGRID
2008Nov50.6°F51.8°F-1.2°NCLIMGRID
2008Dec43.7°F43.4°F+0.3°NCLIMGRID
2009Jan40.8°F39.2°F+1.6°NCLIMGRID
2009Feb49.3°F44.1°F+5.2°NCLIMGRID
2009Mar54.6°F53.5°F+1.1°NCLIMGRID
2009Apr61.8°F62.6°F-0.8°NCLIMGRID
2009May69.6°F70.3°F-0.7°NCLIMGRID
2009Jun80.5°F78.0°F+2.5°NCLIMGRID
2009Jul78.4°F81.2°F-2.8°NCLIMGRID
2009Aug78.0°F79.7°F-1.7°NCLIMGRID
2009Sep73.6°F73.4°F+0.3°NCLIMGRID
2009Oct58.9°F62.5°F-3.6°NCLIMGRID
2009Nov54.9°F51.8°F+3.1°NCLIMGRID
2009Dec40.5°F43.4°F-2.9°NCLIMGRID
2010Jan38.3°F39.2°F-0.9°NCLIMGRID
2010Feb38.5°F44.1°F-5.6°NCLIMGRID
2010Mar52.5°F53.5°F-0.9°NCLIMGRID
2010Apr65.2°F62.6°F+2.6°NCLIMGRID
2010May73.8°F70.3°F+3.4°NCLIMGRID
2010Jun83.6°F78.0°F+5.5°NCLIMGRID
2010Jul83.4°F81.2°F+2.1°NCLIMGRID
2010Aug84.8°F79.7°F+5.1°NCLIMGRID
2010Sep77.3°F73.4°F+3.9°NCLIMGRID
2010Oct64.7°F62.5°F+2.2°NCLIMGRID
2010Nov53.5°F51.8°F+1.7°NCLIMGRID
2010Dec41.3°F43.4°F-2.1°NCLIMGRID
2011Jan40.0°F39.2°F+0.8°NCLIMGRID
2011Feb47.2°F44.1°F+3.1°NCLIMGRID
2011Mar54.0°F53.5°F+0.5°NCLIMGRID
2011Apr65.5°F62.6°F+3.0°NCLIMGRID
2011May69.9°F70.3°F-0.5°NCLIMGRID
2011Jun83.5°F78.0°F+5.5°NCLIMGRID
2011Jul84.9°F81.2°F+3.7°NCLIMGRID
2011Aug83.2°F79.7°F+3.5°NCLIMGRID
2011Sep71.6°F73.4°F-1.8°NCLIMGRID
2011Oct61.7°F62.5°F-0.8°NCLIMGRID
2011Nov55.1°F51.8°F+3.4°NCLIMGRID
2011Dec45.0°F43.4°F+1.6°NCLIMGRID
2012Jan46.8°F39.2°F+7.6°NCLIMGRID
2012Feb49.1°F44.1°F+5.0°NCLIMGRID
2012Mar64.2°F53.5°F+10.8°NCLIMGRID
2012Apr65.2°F62.6°F+2.7°NCLIMGRID
2012May74.6°F70.3°F+4.2°NCLIMGRID
2012Jun78.1°F78.0°F+0.1°NCLIMGRID
2012Jul84.0°F81.2°F+2.7°NCLIMGRID
2012Aug80.8°F79.7°F+1.1°NCLIMGRID
2012Sep74.6°F73.4°F+1.2°NCLIMGRID
2012Oct60.6°F62.5°F-1.9°NCLIMGRID
2012Nov51.1°F51.8°F-0.7°NCLIMGRID
2012Dec48.6°F43.4°F+5.2°NCLIMGRID
2013Jan44.1°F39.2°F+4.9°NCLIMGRID
2013Feb45.6°F44.1°F+1.5°NCLIMGRID
2013Mar48.4°F53.5°F-5.1°NCLIMGRID
2013Apr59.8°F62.6°F-2.8°NCLIMGRID
2013May69.2°F70.3°F-1.1°NCLIMGRID
2013Jun78.7°F78.0°F+0.6°NCLIMGRID
2013Jul79.3°F81.2°F-2.0°NCLIMGRID
2013Aug80.4°F79.7°F+0.8°NCLIMGRID
2013Sep77.4°F73.4°F+4.0°NCLIMGRID
2013Oct63.5°F62.5°F+1.0°NCLIMGRID
2013Nov49.0°F51.8°F-2.8°NCLIMGRID
2013Dec43.2°F43.4°F-0.2°NCLIMGRID
2014Jan37.3°F39.2°F-1.9°NCLIMGRID
2014Feb40.8°F44.1°F-3.3°NCLIMGRID
2014Mar48.8°F53.5°F-4.7°NCLIMGRID
2014Apr61.0°F62.6°F-1.5°NCLIMGRID
2014May69.9°F70.3°F-0.5°NCLIMGRID
2014Jun78.2°F78.0°F+0.2°NCLIMGRID
2014Jul76.4°F81.2°F-4.8°NCLIMGRID
2014Aug79.5°F79.7°F-0.2°NCLIMGRID
2014Sep74.5°F73.4°F+1.1°NCLIMGRID
2014Oct65.4°F62.5°F+2.9°NCLIMGRID
2014Nov46.9°F51.8°F-4.9°NCLIMGRID
2014Dec45.8°F43.4°F+2.4°NCLIMGRID
2015Jan40.1°F39.2°F+0.9°NCLIMGRID
2015Feb37.6°F44.1°F-6.5°NCLIMGRID
2015Mar51.4°F53.5°F-2.1°NCLIMGRID
2015Apr64.5°F62.6°F+1.9°NCLIMGRID
2015May71.6°F70.3°F+1.3°NCLIMGRID
2015Jun79.5°F78.0°F+1.4°NCLIMGRID
2015Jul83.2°F81.2°F+1.9°NCLIMGRID
2015Aug79.9°F79.7°F+0.3°NCLIMGRID
2015Sep76.6°F73.4°F+3.3°NCLIMGRID
2015Oct65.3°F62.5°F+2.8°NCLIMGRID
2015Nov56.1°F51.8°F+4.3°NCLIMGRID
2015Dec52.4°F43.4°F+9.0°NCLIMGRID
2016Jan41.3°F39.2°F+2.1°NCLIMGRID
2016Feb48.3°F44.1°F+4.2°NCLIMGRID
2016Mar57.7°F53.5°F+4.2°NCLIMGRID
2016Apr63.9°F62.6°F+1.4°NCLIMGRID
2016May69.1°F70.3°F-1.2°NCLIMGRID
2016Jun80.0°F78.0°F+2.0°NCLIMGRID
2016Jul82.7°F81.2°F+1.5°NCLIMGRID
2016Aug81.2°F79.7°F+1.5°NCLIMGRID
2016Sep77.4°F73.4°F+4.0°NCLIMGRID
2016Oct68.5°F62.5°F+6.0°NCLIMGRID
2016Nov56.9°F51.8°F+5.1°NCLIMGRID
2016Dec44.9°F43.4°F+1.5°NCLIMGRID
2017Jan47.3°F39.2°F+8.1°NCLIMGRID
2017Feb54.2°F44.1°F+10.1°NCLIMGRID
2017Mar57.7°F53.5°F+4.2°NCLIMGRID
2017Apr65.9°F62.6°F+3.3°NCLIMGRID
2017May69.7°F70.3°F-0.6°NCLIMGRID
2017Jun76.4°F78.0°F-1.6°NCLIMGRID
2017Jul81.3°F81.2°F+0.0°NCLIMGRID
2017Aug78.6°F79.7°F-1.0°NCLIMGRID
2017Sep74.2°F73.4°F+0.9°NCLIMGRID
2017Oct64.6°F62.5°F+2.1°NCLIMGRID
2017Nov55.2°F51.8°F+3.4°NCLIMGRID
2017Dec43.7°F43.4°F+0.3°NCLIMGRID
2018Jan37.4°F39.2°F-1.8°NCLIMGRID
2018Feb48.3°F44.1°F+4.2°NCLIMGRID
2018Mar56.6°F53.5°F+3.1°NCLIMGRID
2018Apr56.9°F62.6°F-5.7°NCLIMGRID
2018May76.8°F70.3°F+6.4°NCLIMGRID
2018Jun81.2°F78.0°F+3.1°NCLIMGRID
2018Jul82.4°F81.2°F+1.2°NCLIMGRID
2018Aug79.6°F79.7°F-0.1°NCLIMGRID
2018Sep75.8°F73.4°F+2.5°NCLIMGRID
2018Oct64.7°F62.5°F+2.2°NCLIMGRID
2018Nov48.0°F51.8°F-3.8°NCLIMGRID
2018Dec45.8°F43.4°F+2.4°NCLIMGRID
2019Jan43.3°F39.2°F+4.1°NCLIMGRID
2019Feb48.3°F44.1°F+4.2°NCLIMGRID
2019Mar50.9°F53.5°F-2.6°NCLIMGRID
2019Apr62.3°F62.6°F-0.3°NCLIMGRID
2019May72.8°F70.3°F+2.5°NCLIMGRID
2019Jun77.3°F78.0°F-0.7°NCLIMGRID
2019Jul80.2°F81.2°F-1.0°NCLIMGRID
2019Aug81.5°F79.7°F+1.8°NCLIMGRID
2019Sep81.4°F73.4°F+8.1°NCLIMGRID
2019Oct63.0°F62.5°F+0.5°NCLIMGRID
2019Nov47.6°F51.8°F-4.1°NCLIMGRID
2019Dec47.2°F43.4°F+3.8°NCLIMGRID
2020Jan45.9°F39.2°F+6.7°NCLIMGRID
2020Feb47.2°F44.1°F+3.1°NCLIMGRID
2020Mar58.1°F53.5°F+4.7°NCLIMGRID
2020Apr60.1°F62.6°F-2.5°NCLIMGRID
2020May69.3°F70.3°F-1.1°NCLIMGRID
2020Jun77.5°F78.0°F-0.6°NCLIMGRID
2020Jul82.1°F81.2°F+0.9°NCLIMGRID
2020Aug79.3°F79.7°F-0.4°NCLIMGRID
2020Sep73.3°F73.4°F+0.0°NCLIMGRID
2020Oct60.9°F62.5°F-1.6°NCLIMGRID
2020Nov55.7°F51.8°F+3.9°NCLIMGRID
2020Dec44.5°F43.4°F+1.1°NCLIMGRID
2021Jan43.1°F39.2°F+3.9°NCLIMGRID
2021Feb36.4°F44.1°F-7.7°NCLIMGRID
2021Mar57.5°F53.5°F+4.1°NCLIMGRID
2021Apr59.6°F62.6°F-3.0°NCLIMGRID
2021May68.6°F70.3°F-1.8°NCLIMGRID
2021Jun77.5°F78.0°F-0.6°NCLIMGRID
2021Jul80.5°F81.2°F-0.7°NCLIMGRID
2021Aug81.7°F79.7°F+2.0°NCLIMGRID
2021Sep75.2°F73.4°F+1.8°NCLIMGRID
2021Oct67.3°F62.5°F+4.8°NCLIMGRID
2021Nov50.4°F51.8°F-1.4°NCLIMGRID
2021Dec55.3°F43.4°F+11.9°NCLIMGRID
2022Jan41.4°F39.2°F+2.2°NCLIMGRID
2022Feb45.0°F44.1°F+0.9°NCLIMGRID
2022Mar54.7°F53.5°F+1.3°NCLIMGRID
2022Apr62.0°F62.6°F-0.6°NCLIMGRID
2022May73.6°F70.3°F+3.3°NCLIMGRID
2022Jun79.9°F78.0°F+1.9°NCLIMGRID
2022Jul84.5°F81.2°F+3.2°NCLIMGRID
2022Aug80.8°F79.7°F+1.1°NCLIMGRID
2022Sep75.8°F73.4°F+2.5°NCLIMGRID
2022Oct63.9°F62.5°F+1.4°NCLIMGRID
2022Nov51.4°F51.8°F-0.3°NCLIMGRID
2022Dec46.0°F43.4°F+2.5°NCLIMGRID
2023Jan49.7°F39.2°F+10.6°NCLIMGRID
2023Feb51.7°F44.1°F+7.6°NCLIMGRID
2023Mar56.0°F53.5°F+2.6°NCLIMGRID
2023Apr62.0°F62.6°F-0.5°NCLIMGRID
2023May72.6°F70.3°F+2.2°NCLIMGRID
2023Jun79.4°F78.0°F+1.3°NCLIMGRID
2023Jul82.5°F81.2°F+1.3°NCLIMGRID
2023Aug84.0°F79.7°F+4.3°NCLIMGRID
2023Sep77.3°F73.4°F+3.9°NCLIMGRID
2023Oct66.6°F62.5°F+4.1°NCLIMGRID
2023Nov53.3°F51.8°F+1.6°NCLIMGRID
2023Dec48.5°F43.4°F+5.1°NCLIMGRID
2024Jan38.8°F39.2°F-0.4°NCLIMGRID
2024Feb53.6°F44.1°F+9.5°NCLIMGRID
2024Mar56.7°F53.5°F+3.2°NCLIMGRID
2024Apr65.2°F62.6°F+2.7°NCLIMGRID
2024May75.2°F70.3°F+4.9°NCLIMGRID
2024Jun80.0°F78.0°F+1.9°NCLIMGRID
2024Jul81.1°F81.2°F-0.2°NCLIMGRID
2024Aug81.8°F79.7°F+2.2°NCLIMGRID
2024Sep74.8°F73.4°F+1.5°NCLIMGRID
2024Oct67.3°F62.5°F+4.8°NCLIMGRID
2024Nov58.7°F51.8°F+6.9°NCLIMGRID
2024Dec48.0°F43.4°F+4.6°NCLIMGRID
2025Jan38.6°F39.2°F-0.6°NCLIMGRID
2025Feb47.5°F44.1°F+3.4°NCLIMGRID
2025Mar59.0°F53.5°F+5.6°NCLIMGRID
2025Apr67.2°F62.6°F+4.6°NCLIMGRID
2025May71.0°F70.3°F+0.6°NCLIMGRID
2025Jun80.8°F78.0°F+2.7°NCLIMGRID
2025Jul84.2°F81.2°F+3.0°NCLIMGRID
2025Aug80.9°F79.7°F+1.2°NCLIMGRID
2025Sep76.9°F73.4°F+3.6°NCLIMGRID
2025Oct67.2°F62.5°F+4.7°NCLIMGRID
2025Nov57.5°F51.8°F+5.8°NCLIMGRID
2025Dec46.6°F43.4°F+3.2°NCLIMGRID
2026Jan40.9°F39.2°F+1.8°NCLIMGRID
2026Feb51.7°F44.1°F+7.6°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
January39.2°F26/26
February44.1°F26/26
March53.5°F26/26
April62.6°F26/26
May70.3°F26/26
June78.0°F26/26
July81.2°F26/26
August79.7°F26/26
September73.4°F26/26
October62.5°F26/26
November51.8°F26/26
December43.4°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 Altheimer, Arkansas getting warmer?

Based on 96+ years of NOAA temperature records, Altheimer has changed at a rate of approximately 0.06°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 Altheimer?

The warmest year on record in Altheimer was 2023, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Altheimer 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 Altheimer's climate profile.

How are the climate visualizations for Altheimer created?

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

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

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