Climate Change in Malmstrom AFB, Montana

96+ years of recorded temperature data show Malmstrom AFB is warming.

Based on our analysis of 96 years of temperature data near Malmstrom AFB, MT, this area shows a warming trend of approximately +0.2°F per decade. 8 of the last 10 years recorded above-average temperatures, and 1987 was the warmest year on record at +3.9°F above the historical baseline.

Key Climate Facts

Rate of Change

+0.2°F

per decade

Warmest Year

1987

+3.9°F anomaly

Recent Warm Years

8 / 10

above-average years

Decade Shift

+1.5°F

2020s vs 1930s

Compared to the National Average

Malmstrom AFB is warming at roughly the national average rate.

National: +0.20°F/decade
Malmstrom AFB: +0.22°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 Malmstrom AFB's long-term warming trend.

Temperature anomaly spiral for Malmstrom AFB, Montana
Climate spiral: monthly temperature anomalies from 96+ years of NOAA records for Malmstrom AFB, MT.

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 Malmstrom AFB, Montana
Warming stripes: each stripe is one year of average temperature anomaly for Malmstrom AFB, MT.

Temperature Trend

Annual temperature anomalies plotted over time with a linear regression trend line. The slope of +0.22°F per decade quantifies the rate of change.

Temperature trend chart for Malmstrom AFB, Montana
Linear trend: annual temperature anomalies with trend line for Malmstrom AFB, MT.

Temperature by Decade

1930s
+0.43°F
1940s
-0.17°F
1950s
-1.10°F
1960s
-0.17°F
1970s
-0.59°F
1980s
+0.54°F
1990s
+0.84°F
2000s
+1.43°F
2010s
+1.01°F
2020s
+2.14°F

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

Anomaly Scale

-8.6°F Colder Normal +8.5°F Warmer

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

Monthly Temperature Records

Complete monthly temperature record for Malmstrom AFB, MT. Filter by decade or download as CSV.

Data Sources & Audit

Station
nClimGrid 5km Grid Point
Distance
1.0 mi
Coverage
99.1%
Records
1,154
Range
1930-01 – 2026-02
Full Data Audit 1,154 records
YearMonthTempBaselineAnomalySourceGap
1930Jan3.2°F19.1°F-15.9°NCLIMGRID
1930Feb33.2°F26.0°F+7.2°NCLIMGRID
1930Mar28.7°F33.0°F-4.3°NCLIMGRID
1930Apr49.5°F42.6°F+6.9°NCLIMGRID
1930May51.0°F52.1°F-1.1°NCLIMGRID
1930Jun61.0°F60.8°F+0.2°NCLIMGRID
1930Jul70.4°F67.1°F+3.2°NCLIMGRID
1930Aug70.2°F66.3°F+3.9°NCLIMGRID
1930Sep57.0°F56.0°F+1.0°NCLIMGRID
1930Oct38.9°F45.5°F-6.6°NCLIMGRID
1930Nov33.4°F32.1°F+1.3°NCLIMGRID
1930Dec31.6°F23.2°F+8.4°NCLIMGRID
1931Jan31.1°F19.1°F+12.0°NCLIMGRID
1931Feb33.0°F26.0°F+7.0°NCLIMGRID
1931Mar32.8°F33.0°F-0.1°NCLIMGRID
1931Apr43.8°F42.6°F+1.1°NCLIMGRID
1931May54.2°F52.1°F+2.1°NCLIMGRID
1931Jun64.1°F60.8°F+3.3°NCLIMGRID
1931Jul68.3°F67.1°F+1.1°NCLIMGRID
1931Aug67.8°F66.3°F+1.5°NCLIMGRID
1931Sep56.8°F56.0°F+0.7°NCLIMGRID
1931Oct47.4°F45.5°F+1.9°NCLIMGRID
1931Nov26.6°F32.1°F-5.5°NCLIMGRID
1931Dec27.1°F23.2°F+3.9°NCLIMGRID
1932Jan18.9°F19.1°F-0.2°NCLIMGRID
1932Feb25.3°F26.0°F-0.6°NCLIMGRID
1932Mar22.5°F33.0°F-10.5°NCLIMGRID
1932Apr44.3°F42.6°F+1.7°NCLIMGRID
1932May53.4°F52.1°F+1.3°NCLIMGRID
1932Jun61.1°F60.8°F+0.3°NCLIMGRID
1932Jul69.2°F67.1°F+2.1°NCLIMGRID
1932Aug66.4°F66.3°F+0.1°NCLIMGRID
1932Sep57.1°F56.0°F+1.1°NCLIMGRID
1932Oct43.7°F45.5°F-1.8°NCLIMGRID
1932Nov35.8°F32.1°F+3.7°NCLIMGRID
1932Dec18.2°F23.2°F-5.0°NCLIMGRID
1933Jan23.9°F19.1°F+4.8°NCLIMGRID
1933Feb17.1°F26.0°F-8.9°NCLIMGRID
1933Mar34.7°F33.0°F+1.8°NCLIMGRID
1933Apr39.5°F42.6°F-3.1°NCLIMGRID
1933May49.8°F52.1°F-2.3°NCLIMGRID
1933Jun65.6°F60.8°F+4.8°NCLIMGRID
1933Jul70.9°F67.1°F+3.8°NCLIMGRID
1933Aug66.2°F66.3°F-0.1°NCLIMGRID
1933Sep55.2°F56.0°F-0.8°NCLIMGRID
1933Oct45.0°F45.5°F-0.5°NCLIMGRID
1933Nov37.9°F32.1°F+5.7°NCLIMGRID
1933Dec19.3°F23.2°F-3.9°NCLIMGRID
1934Jan31.1°F19.1°F+12.0°NCLIMGRID
1934Feb31.0°F26.0°F+5.0°NCLIMGRID
1934Mar33.7°F33.0°F+0.7°NCLIMGRID
1934Apr48.1°F42.6°F+5.5°NCLIMGRID
1934May59.4°F52.1°F+7.3°NCLIMGRID
1934Jun59.2°F60.8°F-1.6°NCLIMGRID
1934Jul69.1°F67.1°F+2.0°NCLIMGRID
1934Aug67.4°F66.3°F+1.1°NCLIMGRID
1934Sep51.2°F56.0°F-4.9°NCLIMGRID
1934Oct48.8°F45.5°F+3.3°NCLIMGRID
1934Nov38.7°F32.1°F+6.5°NCLIMGRID
1934Dec24.6°F23.2°F+1.4°NCLIMGRID
1935Jan18.1°F19.1°F-1.0°NCLIMGRID
1935Feb31.4°F26.0°F+5.4°NCLIMGRID
1935Mar26.4°F33.0°F-6.6°NCLIMGRID
1935Apr33.0°F42.6°F-9.6°NCLIMGRID
1935May48.9°F52.1°F-3.2°NCLIMGRID
1935Jun59.4°F60.8°F-1.4°NCLIMGRID
1935Jul69.4°F67.1°F+2.3°NCLIMGRID
1935Aug65.4°F66.3°F-0.9°NCLIMGRID
1935Sep58.4°F56.0°F+2.3°NCLIMGRID
1935Oct44.3°F45.5°F-1.1°NCLIMGRID
1935Nov28.1°F32.1°F-4.1°NCLIMGRID
1935Dec28.3°F23.2°F+5.1°NCLIMGRID
1936Jan15.3°F19.1°F-3.8°NCLIMGRID
1936Feb-6.6°F26.0°F-32.5°NCLIMGRID
1936Mar29.7°F33.0°F-3.2°NCLIMGRID
1936Apr41.6°F42.6°F-1.0°NCLIMGRID
1936May59.7°F52.1°F+7.6°NCLIMGRID
1936Jun64.4°F60.8°F+3.6°NCLIMGRID
1936Jul75.3°F67.1°F+8.1°NCLIMGRID
1936Aug69.1°F66.3°F+2.8°NCLIMGRID
1936Sep57.0°F56.0°F+0.9°NCLIMGRID
1936Oct49.1°F45.5°F+3.6°NCLIMGRID
1936Nov35.4°F32.1°F+3.3°NCLIMGRID
1936Dec22.3°F23.2°F-0.9°NCLIMGRID
1937Jan-0.7°F19.1°F-19.8°NCLIMGRID
1937Feb14.5°F26.0°F-11.5°NCLIMGRID
1937Mar29.6°F33.0°F-3.4°NCLIMGRID
1937Apr44.4°F42.6°F+1.8°NCLIMGRID
1937May54.5°F52.1°F+2.4°NCLIMGRID
1937Jun60.3°F60.8°F-0.5°NCLIMGRID
1937Jul70.6°F67.1°F+3.5°NCLIMGRID
1937Aug66.6°F66.3°F+0.3°NCLIMGRID
1937Sep57.5°F56.0°F+1.4°NCLIMGRID
1937Oct48.7°F45.5°F+3.2°NCLIMGRID
1937Nov30.3°F32.1°F-1.9°NCLIMGRID
1937Dec23.3°F23.2°F+0.1°NCLIMGRID
1938Jan27.4°F19.1°F+8.3°NCLIMGRID
1938Feb13.3°F26.0°F-12.7°NCLIMGRID
1938Mar32.4°F33.0°F-0.6°NCLIMGRID
1938Apr43.0°F42.6°F+0.4°NCLIMGRID
1938May50.3°F52.1°F-1.8°NCLIMGRID
1938Jun61.0°F60.8°F+0.2°NCLIMGRID
1938Jul68.0°F67.1°F+0.9°NCLIMGRID
1938Aug65.6°F66.3°F-0.7°NCLIMGRID
1938Sep63.1°F56.0°F+7.1°NCLIMGRID
1938Oct47.9°F45.5°F+2.4°NCLIMGRID
1938Nov30.5°F32.1°F-1.6°NCLIMGRID
1938Dec26.7°F23.2°F+3.6°NCLIMGRID
1939Jan29.8°F19.1°F+10.7°NCLIMGRID
1939Feb15.8°F26.0°F-10.2°NCLIMGRID
1939Mar33.5°F33.0°F+0.5°NCLIMGRID
1939Apr45.6°F42.6°F+3.0°NCLIMGRID
1939May55.9°F52.1°F+3.8°NCLIMGRID
1939Jun55.7°F60.8°F-5.1°NCLIMGRID
1939Jul70.6°F67.1°F+3.5°NCLIMGRID
1939Aug67.7°F66.3°F+1.5°NCLIMGRID
1939Sep58.4°F56.0°F+2.3°NCLIMGRID
1939Oct45.6°F45.5°F+0.1°NCLIMGRID
1939Nov41.8°F32.1°F+9.7°NCLIMGRID
1939Dec32.9°F23.2°F+9.7°NCLIMGRID
1940Jan13.1°F19.1°F-6.0°NCLIMGRID
1940Feb20.2°F26.0°F-5.7°NCLIMGRID
1940Mar35.1°F33.0°F+2.1°NCLIMGRID
1940Apr40.0°F42.6°F-2.6°NCLIMGRID
1940May55.4°F52.1°F+3.3°NCLIMGRID
1940Jun62.6°F60.8°F+1.8°NCLIMGRID
1940Jul69.7°F67.1°F+2.6°NCLIMGRID
1940Aug68.9°F66.3°F+2.6°NCLIMGRID
1940Sep61.4°F56.0°F+5.3°NCLIMGRID
1940Oct50.0°F45.5°F+4.5°NCLIMGRID
1940Nov23.9°F32.1°F-8.3°NCLIMGRID
1940Dec29.8°F23.2°F+6.6°NCLIMGRID
1941Jan24.4°F19.1°F+5.3°NCLIMGRID
1941Feb26.0°F26.0°F+0.0°NCLIMGRID
1941Mar33.2°F33.0°F+0.3°NCLIMGRID
1941Apr44.0°F42.6°F+1.4°NCLIMGRID
1941May54.0°F52.1°F+1.9°NCLIMGRID
1941Jun61.1°F60.8°F+0.3°NCLIMGRID
1941Jul69.7°F67.1°F+2.6°NCLIMGRID
1941Aug66.9°F66.3°F+0.6°NCLIMGRID
1941Sep50.9°F56.0°F-5.2°NCLIMGRID
1941Oct44.1°F45.5°F-1.4°NCLIMGRID
1941Nov36.8°F32.1°F+4.7°NCLIMGRID
1941Dec26.3°F23.2°F+3.1°NCLIMGRID
1942Jan24.2°F19.1°F+5.1°NCLIMGRID
1942Feb18.8°F26.0°F-7.2°NCLIMGRID
1942Mar33.0°F33.0°F+0.1°NCLIMGRID
1942Apr45.5°F42.6°F+2.9°NCLIMGRID
1942May49.2°F52.1°F-2.9°NCLIMGRID
1942Jun56.0°F60.8°F-4.8°NCLIMGRID
1942Jul68.0°F67.1°F+0.9°NCLIMGRID
1942Aug66.2°F66.3°F-0.1°NCLIMGRID
1942Sep56.0°F56.0°F+0.0°NCLIMGRID
1942Oct48.1°F45.5°F+2.6°NCLIMGRID
1942Nov31.1°F32.1°F-1.1°NCLIMGRID
1942Dec25.4°F23.2°F+2.2°NCLIMGRID
1943Jan7.5°F19.1°F-11.6°NCLIMGRID
1943Feb28.4°F26.0°F+2.4°NCLIMGRID
1943Mar23.7°F33.0°F-9.2°NCLIMGRID
1943Apr48.0°F42.6°F+5.4°NCLIMGRID
1943May48.8°F52.1°F-3.3°NCLIMGRID
1943Jun55.1°F60.8°F-5.7°NCLIMGRID
1943Jul67.3°F67.1°F+0.1°NCLIMGRID
1943Aug66.4°F66.3°F+0.1°NCLIMGRID
1943Sep57.3°F56.0°F+1.3°NCLIMGRID
1943Oct49.0°F45.5°F+3.5°NCLIMGRID
1943Nov36.4°F32.1°F+4.3°NCLIMGRID
1943Dec28.5°F23.2°F+5.4°NCLIMGRID
1944Jan28.9°F19.1°F+9.8°NCLIMGRID
1944Feb22.7°F26.0°F-3.2°NCLIMGRID
1944Mar24.3°F33.0°F-8.7°NCLIMGRID
1944Apr44.6°F42.6°F+2.0°NCLIMGRID
1944May54.8°F52.1°F+2.7°NCLIMGRID
1944Jun57.1°F60.8°F-3.7°NCLIMGRID
1944Jul66.4°F67.1°F-0.7°NCLIMGRID
1944Aug63.5°F66.3°F-2.8°NCLIMGRID
1944Sep57.5°F56.0°F+1.4°NCLIMGRID
1944Oct51.7°F45.5°F+6.2°NCLIMGRID
1944Nov29.8°F32.1°F-2.4°NCLIMGRID
1944Dec24.5°F23.2°F+1.3°NCLIMGRID
1945Jan25.3°F19.1°F+6.2°NCLIMGRID
1945Feb22.8°F26.0°F-3.2°NCLIMGRID
1945Mar34.4°F33.0°F+1.5°NCLIMGRID
1945Apr37.3°F42.6°F-5.3°NCLIMGRID
1945May49.6°F52.1°F-2.5°NCLIMGRID
1945Jun56.1°F60.8°F-4.7°NCLIMGRID
1945Jul69.5°F67.1°F+2.3°NCLIMGRID
1945Aug67.9°F66.3°F+1.6°NCLIMGRID
1945Sep53.6°F56.0°F-2.4°NCLIMGRID
1945Oct49.0°F45.5°F+3.5°NCLIMGRID
1945Nov30.6°F32.1°F-1.6°NCLIMGRID
1945Dec19.9°F23.2°F-3.3°NCLIMGRID
1946Jan28.1°F19.1°F+9.0°NCLIMGRID
1946Feb28.6°F26.0°F+2.7°NCLIMGRID
1946Mar38.8°F33.0°F+5.8°NCLIMGRID
1946Apr47.9°F42.6°F+5.3°NCLIMGRID
1946May49.9°F52.1°F-2.2°NCLIMGRID
1946Jun59.2°F60.8°F-1.6°NCLIMGRID
1946Jul68.4°F67.1°F+1.3°NCLIMGRID
1946Aug65.3°F66.3°F-1.0°NCLIMGRID
1946Sep55.4°F56.0°F-0.6°NCLIMGRID
1946Oct38.8°F45.5°F-6.7°NCLIMGRID
1946Nov25.3°F32.1°F-6.9°NCLIMGRID
1946Dec24.3°F23.2°F+1.1°NCLIMGRID
1947Jan23.8°F19.1°F+4.7°NCLIMGRID
1947Feb21.5°F26.0°F-4.4°NCLIMGRID
1947Mar26.1°F33.0°F-6.8°NCLIMGRID
1947Apr44.7°F42.6°F+2.0°NCLIMGRID
1947May53.4°F52.1°F+1.3°NCLIMGRID
1947Jun56.9°F60.8°F-3.9°NCLIMGRID
1947Jul70.3°F67.1°F+3.2°NCLIMGRID
1947Aug65.9°F66.3°F-0.4°NCLIMGRID
1947Sep55.6°F56.0°F-0.4°NCLIMGRID
1947Oct49.6°F45.5°F+4.1°NCLIMGRID
1947Nov27.2°F32.1°F-4.9°NCLIMGRID
1947Dec28.5°F23.2°F+5.3°NCLIMGRID
1948Jan26.2°F19.1°F+7.1°NCLIMGRID
1948Feb18.2°F26.0°F-7.8°NCLIMGRID
1948Mar25.6°F33.0°F-7.4°NCLIMGRID
1948Apr41.5°F42.6°F-1.1°NCLIMGRID
1948May51.7°F52.1°F-0.4°NCLIMGRID
1948Jun60.2°F60.8°F-0.6°NCLIMGRID
1948Jul64.7°F67.1°F-2.4°NCLIMGRID
1948Aug67.0°F66.3°F+0.8°NCLIMGRID
1948Sep57.9°F56.0°F+1.9°NCLIMGRID
1948Oct46.9°F45.5°F+1.4°NCLIMGRID
1948Nov33.5°F32.1°F+1.4°NCLIMGRID
1948Dec15.5°F23.2°F-7.6°NCLIMGRID
1949Jan6.0°F19.1°F-13.1°NCLIMGRID
1949Feb15.1°F26.0°F-10.8°NCLIMGRID
1949Mar29.3°F33.0°F-3.7°NCLIMGRID
1949Apr49.4°F42.6°F+6.8°NCLIMGRID
1949May55.5°F52.1°F+3.4°NCLIMGRID
1949Jun60.1°F60.8°F-0.7°NCLIMGRID
1949Jul67.0°F67.1°F-0.2°NCLIMGRID
1949Aug69.2°F66.3°F+3.0°NCLIMGRID
1949Sep56.5°F56.0°F+0.5°NCLIMGRID
1949Oct39.9°F45.5°F-5.6°NCLIMGRID
1949Nov44.5°F32.1°F+12.3°NCLIMGRID
1949Dec15.9°F23.2°F-7.3°NCLIMGRID
1950Jan-7.7°F19.1°F-26.8°NCLIMGRID
1950Feb33.0°F26.0°F+7.0°NCLIMGRID
1950Mar27.0°F33.0°F-6.0°NCLIMGRID
1950Apr39.3°F42.6°F-3.4°NCLIMGRID
1950May49.5°F52.1°F-2.6°NCLIMGRID
1950Jun57.4°F60.8°F-3.4°NCLIMGRID
1950Jul64.7°F67.1°F-2.4°NCLIMGRID
1950Aug62.9°F66.3°F-3.4°NCLIMGRID
1950Sep54.2°F56.0°F-1.8°NCLIMGRID
1950Oct46.9°F45.5°F+1.4°NCLIMGRID
1950Nov28.8°F32.1°F-3.3°NCLIMGRID
1950Dec29.6°F23.2°F+6.4°NCLIMGRID
1951Jan14.9°F19.1°F-4.2°NCLIMGRID
1951Feb21.7°F26.0°F-4.3°NCLIMGRID
1951Mar17.3°F33.0°F-15.7°NCLIMGRID
1951Apr39.3°F42.6°F-3.3°NCLIMGRID
1951May52.3°F52.1°F+0.2°NCLIMGRID
1951Jun53.0°F60.8°F-7.8°NCLIMGRID
1951Jul66.7°F67.1°F-0.4°NCLIMGRID
1951Aug61.4°F66.3°F-4.8°NCLIMGRID
1951Sep51.1°F56.0°F-4.9°NCLIMGRID
1951Oct39.8°F45.5°F-5.6°NCLIMGRID
1951Nov32.8°F32.1°F+0.7°NCLIMGRID
1951Dec11.9°F23.2°F-11.3°NCLIMGRID
1952Jan14.4°F19.1°F-4.7°NCLIMGRID
1952Feb25.3°F26.0°F-0.7°NCLIMGRID
1952Mar26.5°F33.0°F-6.5°NCLIMGRID
1952Apr49.3°F42.6°F+6.7°NCLIMGRID
1952May53.9°F52.1°F+1.7°NCLIMGRID
1952Jun60.2°F60.8°F-0.6°NCLIMGRID
1952Jul65.3°F67.1°F-1.9°NCLIMGRID
1952Aug64.6°F66.3°F-1.6°NCLIMGRID
1952Sep59.8°F56.0°F+3.8°NCLIMGRID
1952Oct48.1°F45.5°F+2.6°NCLIMGRID
1952Nov31.3°F32.1°F-0.9°NCLIMGRID
1952Dec29.7°F23.2°F+6.5°NCLIMGRID
1953Jan29.5°F19.1°F+10.4°NCLIMGRID
1953Feb29.6°F26.0°F+3.6°NCLIMGRID
1953Mar34.7°F33.0°F+1.7°NCLIMGRID
1953Apr37.2°F42.6°F-5.4°NCLIMGRID
1953May48.7°F52.1°F-3.5°NCLIMGRID
1953Jun57.9°F60.8°F-2.9°NCLIMGRID
1953Jul68.7°F67.1°F+1.6°NCLIMGRID
1953Aug67.2°F66.3°F+1.0°NCLIMGRID
1953Sep58.9°F56.0°F+2.9°NCLIMGRID
1953Oct51.7°F45.5°F+6.2°NCLIMGRID
1953Nov41.7°F32.1°F+9.5°NCLIMGRID
1953Dec30.1°F23.2°F+6.9°NCLIMGRID
1954Jan6.3°F19.1°F-12.8°NCLIMGRID
1954Feb37.5°F26.0°F+11.5°NCLIMGRID
1954Mar23.8°F33.0°F-9.1°NCLIMGRID
1954Apr35.5°F42.6°F-7.1°NCLIMGRID
1954May52.2°F52.1°F+0.0°NCLIMGRID
1954Jun55.4°F60.8°F-5.4°NCLIMGRID
1954Jul69.7°F67.1°F+2.5°NCLIMGRID
1954Aug63.3°F66.3°F-3.0°NCLIMGRID
1954Sep54.1°F56.0°F-2.0°NCLIMGRID
1954Oct43.4°F45.5°F-2.1°NCLIMGRID
1954Nov41.9°F32.1°F+9.7°NCLIMGRID
1954Dec31.7°F23.2°F+8.6°NCLIMGRID
1955Jan22.2°F19.1°F+3.0°NCLIMGRID
1955Feb18.5°F26.0°F-7.4°NCLIMGRID
1955Mar21.1°F33.0°F-11.9°NCLIMGRID
1955Apr39.0°F42.6°F-3.6°NCLIMGRID
1955May48.5°F52.1°F-3.6°NCLIMGRID
1955Jun58.3°F60.8°F-2.5°NCLIMGRID
1955Jul65.1°F67.1°F-2.0°NCLIMGRID
1955Aug67.8°F66.3°F+1.5°NCLIMGRID
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1983Dec3.7°F23.2°F-19.5°NCLIMGRID
1984Jan27.6°F19.1°F+8.5°NCLIMGRID
1984Feb35.3°F26.0°F+9.3°NCLIMGRID
1984Mar34.0°F33.0°F+1.0°NCLIMGRID
1984Apr43.4°F42.6°F+0.8°NCLIMGRID
1984May51.3°F52.1°F-0.9°NCLIMGRID
1984Jun59.1°F60.8°F-1.7°NCLIMGRID
1984Jul68.2°F67.1°F+1.1°NCLIMGRID
1984Aug69.9°F66.3°F+3.7°NCLIMGRID
1984Sep50.4°F56.0°F-5.6°NCLIMGRID
1984Oct39.3°F45.5°F-6.2°NCLIMGRID
1984Nov34.0°F32.1°F+1.9°NCLIMGRID
1984Dec13.2°F23.2°F-10.0°NCLIMGRID
1985Jan18.6°F19.1°F-0.5°NCLIMGRID
1985Feb20.6°F26.0°F-5.3°NCLIMGRID
1985Mar32.6°F33.0°F-0.3°NCLIMGRID
1985Apr47.3°F42.6°F+4.7°NCLIMGRID
1985May56.4°F52.1°F+4.3°NCLIMGRID
1985Jun60.7°F60.8°F-0.1°NCLIMGRID
1985Jul71.6°F67.1°F+4.5°NCLIMGRID
1985Aug61.1°F66.3°F-5.1°NCLIMGRID
1985Sep47.5°F56.0°F-8.5°NCLIMGRID
1985Oct43.7°F45.5°F-1.7°NCLIMGRID
1985Nov11.8°F32.1°F-20.4°NCLIMGRID
1985Dec23.9°F23.2°F+0.7°NCLIMGRID
1986Jan34.7°F19.1°F+15.6°NCLIMGRID
1986Feb17.5°F26.0°F-8.4°NCLIMGRID
1986Mar43.1°F33.0°F+10.1°NCLIMGRID
1986Apr42.1°F42.6°F-0.5°NCLIMGRID
1986May52.8°F52.1°F+0.7°NCLIMGRID
1986Jun65.4°F60.8°F+4.6°NCLIMGRID
1986Jul63.6°F67.1°F-3.6°NCLIMGRID
1986Aug67.9°F66.3°F+1.6°NCLIMGRID
1986Sep50.1°F56.0°F-5.9°NCLIMGRID
1986Oct48.4°F45.5°F+2.9°NCLIMGRID
1986Nov30.0°F32.1°F-2.2°NCLIMGRID
1986Dec31.4°F23.2°F+8.2°NCLIMGRID
1987Jan29.9°F19.1°F+10.8°NCLIMGRID
1987Feb34.3°F26.0°F+8.3°NCLIMGRID
1987Mar34.7°F33.0°F+1.7°NCLIMGRID
1987Apr51.4°F42.6°F+8.8°NCLIMGRID
1987May56.6°F52.1°F+4.4°NCLIMGRID
1987Jun64.3°F60.8°F+3.5°NCLIMGRID
1987Jul65.9°F67.1°F-1.2°NCLIMGRID
1987Aug61.1°F66.3°F-5.2°NCLIMGRID
1987Sep58.8°F56.0°F+2.8°NCLIMGRID
1987Oct46.8°F45.5°F+1.3°NCLIMGRID
1987Nov38.7°F32.1°F+6.6°NCLIMGRID
1987Dec28.6°F23.2°F+5.4°NCLIMGRID
1988Jan21.9°F19.1°F+2.8°NCLIMGRID
1988Feb27.4°F26.0°F+1.4°NCLIMGRID
1988Mar36.5°F33.0°F+3.5°NCLIMGRID
1988Apr46.3°F42.6°F+3.7°NCLIMGRID
1988May56.0°F52.1°F+3.9°NCLIMGRID
1988Jun68.8°F60.8°F+8.0°NCLIMGRID
1988Jul68.3°F67.1°F+1.1°NCLIMGRID
1988Aug66.4°F66.3°F+0.1°NCLIMGRID
1988Sep55.1°F56.0°F-0.9°NCLIMGRID
1988Oct49.0°F45.5°F+3.6°NCLIMGRID
1988Nov34.7°F32.1°F+2.6°NCLIMGRID
1988Dec28.8°F23.2°F+5.6°NCLIMGRID
1989Jan26.3°F19.1°F+7.2°NCLIMGRID
1989Feb9.4°F26.0°F-16.6°NCLIMGRID
1989Mar27.6°F33.0°F-5.3°NCLIMGRID
1989Apr42.9°F42.6°F+0.3°NCLIMGRID
1989May50.9°F52.1°F-1.2°NCLIMGRID
1989Jun60.7°F60.8°F-0.1°NCLIMGRID
1989Jul68.8°F67.1°F+1.7°NCLIMGRID
1989Aug63.6°F66.3°F-2.7°NCLIMGRID
1989Sep55.5°F56.0°F-0.5°NCLIMGRID
1989Oct45.5°F45.5°F+0.1°NCLIMGRID
1989Nov35.8°F32.1°F+3.7°NCLIMGRID
1989Dec25.6°F23.2°F+2.4°NCLIMGRID
1990Jan28.5°F19.1°F+9.3°NCLIMGRID
1990Feb27.0°F26.0°F+1.1°NCLIMGRID
1990Mar35.4°F33.0°F+2.4°NCLIMGRID
1990Apr43.7°F42.6°F+1.1°NCLIMGRID
1990May49.8°F52.1°F-2.3°NCLIMGRID
1990Jun59.8°F60.8°F-1.0°NCLIMGRID
1990Jul66.5°F67.1°F-0.6°NCLIMGRID
1990Aug68.2°F66.3°F+1.9°NCLIMGRID
1990Sep62.2°F56.0°F+6.1°NCLIMGRID
1990Oct45.7°F45.5°F+0.2°NCLIMGRID
1990Nov36.6°F32.1°F+4.5°NCLIMGRID
1990Dec16.9°F23.2°F-6.3°NCLIMGRID
1991Jan17.5°F19.1°F-1.6°NCLIMGRID
1991Feb38.1°F26.0°F+12.1°NCLIMGRID
1991Mar34.6°F33.0°F+1.6°NCLIMGRID
1991Apr42.9°F42.6°F+0.3°NCLIMGRID
1991May50.9°F52.1°F-1.2°NCLIMGRID
1991Jun57.8°F60.8°F-3.0°NCLIMGRID
1991Jul66.9°F67.1°F-0.3°NCLIMGRID
1991Aug71.1°F66.3°F+4.8°NCLIMGRID
1991Sep57.5°F56.0°F+1.4°NCLIMGRID
1991Oct42.4°F45.5°F-3.1°NCLIMGRID
1991Nov31.0°F32.1°F-1.1°NCLIMGRID
1991Dec33.7°F23.2°F+10.5°NCLIMGRID
1992Jan33.1°F19.1°F+14.0°NCLIMGRID
1992Feb35.4°F26.0°F+9.4°NCLIMGRID
1992Mar40.2°F33.0°F+7.2°NCLIMGRID
1992Apr46.5°F42.6°F+3.8°NCLIMGRID
1992May55.1°F52.1°F+3.0°NCLIMGRID
1992Jun62.6°F60.8°F+1.8°NCLIMGRID
1992Jul60.7°F67.1°F-6.4°NCLIMGRID
1992Aug62.7°F66.3°F-3.6°NCLIMGRID
1992Sep56.2°F56.0°F+0.1°NCLIMGRID
1992Oct46.9°F45.5°F+1.4°NCLIMGRID
1992Nov34.1°F32.1°F+2.0°NCLIMGRID
1992Dec17.6°F23.2°F-5.6°NCLIMGRID
1993Jan13.2°F19.1°F-5.9°NCLIMGRID
1993Feb18.2°F26.0°F-7.7°NCLIMGRID
1993Mar36.8°F33.0°F+3.8°NCLIMGRID
1993Apr43.6°F42.6°F+1.0°NCLIMGRID
1993May55.5°F52.1°F+3.4°NCLIMGRID
1993Jun57.0°F60.8°F-3.8°NCLIMGRID
1993Jul58.1°F67.1°F-9.0°NCLIMGRID
1993Aug60.7°F66.3°F-5.5°NCLIMGRID
1993Sep52.8°F56.0°F-3.2°NCLIMGRID
1993Oct46.4°F45.5°F+0.9°NCLIMGRID
1993Nov28.3°F32.1°F-3.9°NCLIMGRID
1993Dec32.1°F23.2°F+8.9°NCLIMGRID
1994Jan26.3°F19.1°F+7.2°NCLIMGRID
1994Feb16.6°F26.0°F-9.3°NCLIMGRID
1994Mar39.6°F33.0°F+6.6°NCLIMGRID
1994Apr44.2°F42.6°F+1.6°NCLIMGRID
1994May54.7°F52.1°F+2.6°NCLIMGRID
1994Jun61.3°F60.8°F+0.5°NCLIMGRID
1994Jul67.9°F67.1°F+0.8°NCLIMGRID
1994Aug67.8°F66.3°F+1.5°NCLIMGRID
1994Sep60.9°F56.0°F+4.8°NCLIMGRID
1994Oct44.8°F45.5°F-0.7°NCLIMGRID
1994Nov30.6°F32.1°F-1.6°NCLIMGRID
1994Dec28.6°F23.2°F+5.4°NCLIMGRID
1995Jan27.6°F19.1°F+8.4°NCLIMGRID
1995Feb28.2°F26.0°F+2.2°NCLIMGRID
1995Mar30.7°F33.0°F-2.3°NCLIMGRID
1995Apr40.2°F42.6°F-2.4°NCLIMGRID
1995May50.0°F52.1°F-2.1°NCLIMGRID
1995Jun57.9°F60.8°F-2.9°NCLIMGRID
1995Jul64.2°F67.1°F-2.9°NCLIMGRID
1995Aug64.8°F66.3°F-1.5°NCLIMGRID
1995Sep56.7°F56.0°F+0.6°NCLIMGRID
1995Oct43.6°F45.5°F-1.9°NCLIMGRID
1995Nov34.5°F32.1°F+2.4°NCLIMGRID
1995Dec25.8°F23.2°F+2.7°NCLIMGRID
1996Jan11.6°F19.1°F-7.6°NCLIMGRID
1996Feb26.3°F26.0°F+0.4°NCLIMGRID
1996Mar24.4°F33.0°F-8.6°NCLIMGRID
1996Apr45.1°F42.6°F+2.5°NCLIMGRID
1996May47.6°F52.1°F-4.5°NCLIMGRID
1996Jun61.3°F60.8°F+0.5°NCLIMGRID
1996Jul67.0°F67.1°F-0.1°NCLIMGRID
1996Aug68.2°F66.3°F+1.9°NCLIMGRID
1996Sep54.6°F56.0°F-1.5°NCLIMGRID
1996Oct44.3°F45.5°F-1.2°NCLIMGRID
1996Nov21.1°F32.1°F-11.0°NCLIMGRID
1996Dec15.6°F23.2°F-7.5°NCLIMGRID
1997Jan17.5°F19.1°F-1.6°NCLIMGRID
1997Feb31.1°F26.0°F+5.2°NCLIMGRID
1997Mar34.3°F33.0°F+1.3°NCLIMGRID
1997Apr37.0°F42.6°F-5.6°NCLIMGRID
1997May52.9°F52.1°F+0.8°NCLIMGRID
1997Jun60.3°F60.8°F-0.5°NCLIMGRID
1997Jul65.6°F67.1°F-1.6°NCLIMGRID
1997Aug66.1°F66.3°F-0.2°NCLIMGRID
1997Sep60.7°F56.0°F+4.7°NCLIMGRID
1997Oct45.8°F45.5°F+0.3°NCLIMGRID
1997Nov33.7°F32.1°F+1.6°NCLIMGRID
1997Dec30.1°F23.2°F+7.0°NCLIMGRID
1998Jan20.7°F19.1°F+1.6°NCLIMGRID
1998Feb33.2°F26.0°F+7.2°NCLIMGRID
1998Mar31.9°F33.0°F-1.1°NCLIMGRID
1998Apr45.7°F42.6°F+3.1°NCLIMGRID
1998May54.8°F52.1°F+2.7°NCLIMGRID
1998Jun56.6°F60.8°F-4.2°NCLIMGRID
1998Jul70.0°F67.1°F+2.9°NCLIMGRID
1998Aug69.9°F66.3°F+3.6°NCLIMGRID
1998Sep63.7°F56.0°F+7.6°NCLIMGRID
1998Oct46.8°F45.5°F+1.4°NCLIMGRID
1998Nov34.8°F32.1°F+2.6°NCLIMGRID
1998Dec24.1°F23.2°F+0.9°NCLIMGRID
1999Jan26.5°F19.1°F+7.4°NCLIMGRID
1999Feb34.0°F26.0°F+8.1°NCLIMGRID
1999Mar38.0°F33.0°F+5.1°NCLIMGRID
1999Apr40.5°F42.6°F-2.1°NCLIMGRID
1999May50.5°F52.1°F-1.6°NCLIMGRID
1999Jun58.6°F60.8°F-2.2°NCLIMGRID
1999Jul64.4°F67.1°F-2.8°NCLIMGRID
1999Aug68.6°F66.3°F+2.4°NCLIMGRID
1999Sep53.3°F56.0°F-2.7°NCLIMGRID
1999Oct47.0°F45.5°F+1.6°NCLIMGRID
1999Nov42.5°F32.1°F+10.4°NCLIMGRID
1999Dec34.9°F23.2°F+11.7°NCLIMGRID
2000Jan24.7°F19.1°F+5.6°NCLIMGRID
2000Feb27.7°F26.0°F+1.7°NCLIMGRID
2000Mar37.2°F33.0°F+4.2°NCLIMGRID
2000Apr45.8°F42.6°F+3.1°NCLIMGRID
2000May53.5°F52.1°F+1.4°NCLIMGRID
2000Jun59.5°F60.8°F-1.3°NCLIMGRID
2000Jul70.0°F67.1°F+2.8°NCLIMGRID
2000Aug68.9°F66.3°F+2.6°NCLIMGRID
2000Sep56.4°F56.0°F+0.3°NCLIMGRID
2000Oct45.4°F45.5°F-0.1°NCLIMGRID
2000Nov24.9°F32.1°F-7.2°NCLIMGRID
2000Dec18.6°F23.2°F-4.6°NCLIMGRID
2001Jan29.5°F19.1°F+10.4°NCLIMGRID
2001Feb16.9°F26.0°F-9.1°NCLIMGRID
2001Mar35.9°F33.0°F+2.9°NCLIMGRID
2001Apr42.6°F42.6°F+0.0°NCLIMGRID
2001May55.9°F52.1°F+3.8°NCLIMGRID
2001Jun60.6°F60.8°F-0.2°NCLIMGRID
2001Jul68.8°F67.1°F+1.6°NCLIMGRID
2001Aug71.0°F66.3°F+4.8°NCLIMGRID
2001Sep60.6°F56.0°F+4.6°NCLIMGRID
2001Oct45.7°F45.5°F+0.2°NCLIMGRID
2001Nov40.7°F32.1°F+8.6°NCLIMGRID
2001Dec25.1°F23.2°F+1.9°NCLIMGRID
2002Jan24.9°F19.1°F+5.8°NCLIMGRID
2002Feb29.9°F26.0°F+3.9°NCLIMGRID
2002Mar17.5°F33.0°F-15.5°NCLIMGRID
2002Apr38.4°F42.6°F-4.2°NCLIMGRID
2002May50.1°F52.1°F-2.0°NCLIMGRID
2002Jun60.2°F60.8°F-0.6°NCLIMGRID
2002Jul71.2°F67.1°F+4.0°NCLIMGRID
2002Aug61.2°F66.3°F-5.0°NCLIMGRID
2002Sep57.5°F56.0°F+1.4°NCLIMGRID
2002Oct37.6°F45.5°F-7.9°NCLIMGRID
2002Nov38.1°F32.1°F+6.0°NCLIMGRID
2002Dec30.5°F23.2°F+7.3°NCLIMGRID
2003Jan28.8°F19.1°F+9.7°NCLIMGRID
2003Feb23.6°F26.0°F-2.3°NCLIMGRID
2003Mar31.1°F33.0°F-1.9°NCLIMGRID
2003Apr46.0°F42.6°F+3.3°NCLIMGRID
2003May51.2°F52.1°F-0.9°NCLIMGRID
2003Jun61.0°F60.8°F+0.2°NCLIMGRID
2003Jul72.6°F67.1°F+5.4°NCLIMGRID
2003Aug71.5°F66.3°F+5.2°NCLIMGRID
2003Sep56.7°F56.0°F+0.6°NCLIMGRID
2003Oct49.3°F45.5°F+3.8°NCLIMGRID
2003Nov26.7°F32.1°F-5.5°NCLIMGRID
2003Dec29.8°F23.2°F+6.6°NCLIMGRID
2004Jan19.7°F19.1°F+0.6°NCLIMGRID
2004Feb29.9°F26.0°F+3.9°NCLIMGRID
2004Mar40.1°F33.0°F+7.1°NCLIMGRID
2004Apr45.8°F42.6°F+3.2°NCLIMGRID
2004May48.5°F52.1°F-3.6°NCLIMGRID
2004Jun56.9°F60.8°F-3.9°NCLIMGRID
2004Jul68.2°F67.1°F+1.1°NCLIMGRID
2004Aug64.8°F66.3°F-1.4°NCLIMGRID
2004Sep55.4°F56.0°F-0.7°NCLIMGRID
2004Oct44.3°F45.5°F-1.1°NCLIMGRID
2004Nov37.1°F32.1°F+5.0°NCLIMGRID
2004Dec30.8°F23.2°F+7.6°NCLIMGRID
2005Jan19.6°F19.1°F+0.5°NCLIMGRID
2005Feb31.7°F26.0°F+5.8°NCLIMGRID
2005Mar35.0°F33.0°F+2.0°NCLIMGRID
2005Apr44.9°F42.6°F+2.3°NCLIMGRID
2005May50.7°F52.1°F-1.4°NCLIMGRID
2005Jun58.7°F60.8°F-2.1°NCLIMGRID
2005Jul69.2°F67.1°F+2.1°NCLIMGRID
2005Aug66.0°F66.3°F-0.2°NCLIMGRID
2005Sep56.8°F56.0°F+0.7°NCLIMGRID
2005Oct47.9°F45.5°F+2.4°NCLIMGRID
2005Nov36.6°F32.1°F+4.4°NCLIMGRID
2005Dec24.3°F23.2°F+1.1°NCLIMGRID
2006Jan36.1°F19.1°F+16.9°NCLIMGRID
2006Feb26.4°F26.0°F+0.5°NCLIMGRID
2006Mar31.7°F33.0°F-1.3°NCLIMGRID
2006Apr46.7°F42.6°F+4.1°NCLIMGRID
2006May55.7°F52.1°F+3.6°NCLIMGRID
2006Jun62.9°F60.8°F+2.1°NCLIMGRID
2006Jul73.1°F67.1°F+6.0°NCLIMGRID
2006Aug66.9°F66.3°F+0.6°NCLIMGRID
2006Sep58.2°F56.0°F+2.2°NCLIMGRID
2006Oct42.2°F45.5°F-3.3°NCLIMGRID
2006Nov31.3°F32.1°F-0.8°NCLIMGRID
2006Dec31.7°F23.2°F+8.5°NCLIMGRID
2007Jan26.6°F19.1°F+7.5°NCLIMGRID
2007Feb22.9°F26.0°F-3.0°NCLIMGRID
2007Mar42.2°F33.0°F+9.3°NCLIMGRID
2007Apr42.4°F42.6°F-0.2°NCLIMGRID
2007May54.1°F52.1°F+2.0°NCLIMGRID
2007Jun63.3°F60.8°F+2.5°NCLIMGRID
2007Jul77.5°F67.1°F+10.3°NCLIMGRID
2007Aug68.0°F66.3°F+1.7°NCLIMGRID
2007Sep56.9°F56.0°F+0.8°NCLIMGRID
2007Oct47.6°F45.5°F+2.1°NCLIMGRID
2007Nov33.4°F32.1°F+1.3°NCLIMGRID
2007Dec25.8°F23.2°F+2.6°NCLIMGRID
2008Jan20.9°F19.1°F+1.8°NCLIMGRID
2008Feb29.3°F26.0°F+3.3°NCLIMGRID
2008Mar34.3°F33.0°F+1.3°NCLIMGRID
2008Apr38.9°F42.6°F-3.7°NCLIMGRID
2008May52.1°F52.1°F+0.0°NCLIMGRID
2008Jun59.6°F60.8°F-1.2°NCLIMGRID
2008Jul69.0°F67.1°F+1.8°NCLIMGRID
2008Aug68.0°F66.3°F+1.7°NCLIMGRID
2008Sep55.3°F56.0°F-0.7°NCLIMGRID
2008Oct46.7°F45.5°F+1.2°NCLIMGRID
2008Nov39.6°F32.1°F+7.5°NCLIMGRID
2008Dec15.7°F23.2°F-7.4°NCLIMGRID
2009Jan25.1°F19.1°F+6.0°NCLIMGRID
2009Feb28.6°F26.0°F+2.6°NCLIMGRID
2009Mar30.8°F33.0°F-2.1°NCLIMGRID
2009Apr41.0°F42.6°F-1.6°NCLIMGRID
2009May51.4°F52.1°F-0.7°NCLIMGRID
2009Jun58.4°F60.8°F-2.4°NCLIMGRID
2009Jul66.7°F67.1°F-0.5°NCLIMGRID
2009Aug65.4°F66.3°F-0.8°NCLIMGRID
2009Sep63.7°F56.0°F+7.6°NCLIMGRID
2009Oct38.6°F45.5°F-6.9°NCLIMGRID
2009Nov39.1°F32.1°F+6.9°NCLIMGRID
2009Dec13.6°F23.2°F-9.5°NCLIMGRID
2010Jan25.2°F19.1°F+6.1°NCLIMGRID
2010Feb25.7°F26.0°F-0.3°NCLIMGRID
2010Mar42.0°F33.0°F+9.0°NCLIMGRID
2010Apr43.5°F42.6°F+0.9°NCLIMGRID
2010May47.8°F52.1°F-4.3°NCLIMGRID
2010Jun59.1°F60.8°F-1.7°NCLIMGRID
2010Jul66.3°F67.1°F-0.9°NCLIMGRID
2010Aug65.4°F66.3°F-0.8°NCLIMGRID
2010Sep56.1°F56.0°F+0.1°NCLIMGRID
2010Oct51.5°F45.5°F+6.0°NCLIMGRID
2010Nov27.4°F32.1°F-4.7°NCLIMGRID
2010Dec21.9°F23.2°F-1.3°NCLIMGRID
2011Jan22.5°F19.1°F+3.4°NCLIMGRID
2011Feb17.1°F26.0°F-8.9°NCLIMGRID
2011Mar31.7°F33.0°F-1.2°NCLIMGRID
2011Apr39.1°F42.6°F-3.5°NCLIMGRID
2011May49.7°F52.1°F-2.4°NCLIMGRID
2011Jun57.9°F60.8°F-2.9°NCLIMGRID
2011Jul68.6°F67.1°F+1.4°NCLIMGRID
2011Aug70.0°F66.3°F+3.7°NCLIMGRID
2011Sep61.6°F56.0°F+5.6°NCLIMGRID
2011Oct47.3°F45.5°F+1.8°NCLIMGRID
2011Nov34.6°F32.1°F+2.4°NCLIMGRID
2011Dec31.3°F23.2°F+8.1°NCLIMGRID
2012Jan27.3°F19.1°F+8.2°NCLIMGRID
2012Feb28.6°F26.0°F+2.6°NCLIMGRID
2012Mar40.4°F33.0°F+7.4°NCLIMGRID
2012Apr47.5°F42.6°F+4.9°NCLIMGRID
2012May51.0°F52.1°F-1.1°NCLIMGRID
2012Jun62.1°F60.8°F+1.3°NCLIMGRID
2012Jul73.2°F67.1°F+6.0°NCLIMGRID
2012Aug68.8°F66.3°F+2.5°NCLIMGRID
2012Sep60.9°F56.0°F+4.8°NCLIMGRID
2012Oct42.2°F45.5°F-3.3°NCLIMGRID
2012Nov36.7°F32.1°F+4.6°NCLIMGRID
2012Dec24.2°F23.2°F+1.1°NCLIMGRID
2013Jan27.3°F19.1°F+8.2°NCLIMGRID
2013Feb32.5°F26.0°F+6.5°NCLIMGRID
2013Mar34.7°F33.0°F+1.7°NCLIMGRID
2013Apr39.1°F42.6°F-3.5°NCLIMGRID
2013May53.3°F52.1°F+1.2°NCLIMGRID
2013Jun61.3°F60.8°F+0.5°NCLIMGRID
2013Jul70.0°F67.1°F+2.8°NCLIMGRID
2013Aug70.2°F66.3°F+3.9°NCLIMGRID
2013Sep62.1°F56.0°F+6.1°NCLIMGRID
2013Oct42.4°F45.5°F-3.1°NCLIMGRID
2013Nov34.4°F32.1°F+2.2°NCLIMGRID
2013Dec22.0°F23.2°F-1.2°NCLIMGRID
2014Jan28.7°F19.1°F+9.5°NCLIMGRID
2014Feb14.7°F26.0°F-11.2°NCLIMGRID
2014Mar29.9°F33.0°F-3.0°NCLIMGRID
2014Apr43.7°F42.6°F+1.1°NCLIMGRID
2014May52.2°F52.1°F+0.1°NCLIMGRID
2014Jun58.0°F60.8°F-2.8°NCLIMGRID
2014Jul70.2°F67.1°F+3.0°NCLIMGRID
2014Aug67.3°F66.3°F+1.1°NCLIMGRID
2014Sep57.4°F56.0°F+1.4°NCLIMGRID
2014Oct51.9°F45.5°F+6.4°NCLIMGRID
2014Nov26.1°F32.1°F-6.0°NCLIMGRID
2014Dec27.7°F23.2°F+4.5°NCLIMGRID
2015Jan26.0°F19.1°F+6.9°NCLIMGRID
2015Feb30.4°F26.0°F+4.4°NCLIMGRID
2015Mar43.0°F33.0°F+10.0°NCLIMGRID
2015Apr44.8°F42.6°F+2.2°NCLIMGRID
2015May50.8°F52.1°F-1.3°NCLIMGRID
2015Jun65.8°F60.8°F+5.0°NCLIMGRID
2015Jul67.5°F67.1°F+0.3°NCLIMGRID
2015Aug68.6°F66.3°F+2.4°NCLIMGRID
2015Sep57.8°F56.0°F+1.8°NCLIMGRID
2015Oct48.7°F45.5°F+3.3°NCLIMGRID
2015Nov31.2°F32.1°F-0.9°NCLIMGRID
2015Dec26.2°F23.2°F+3.0°NCLIMGRID
2016Jan25.9°F19.1°F+6.8°NCLIMGRID
2016Feb37.8°F26.0°F+11.9°NCLIMGRID
2016Mar39.6°F33.0°F+6.6°NCLIMGRID
2016Apr46.5°F42.6°F+3.8°NCLIMGRID
2016May51.5°F52.1°F-0.6°NCLIMGRID
2016Jun63.3°F60.8°F+2.5°NCLIMGRID
2016Jul67.2°F67.1°F+0.1°NCLIMGRID
2016Aug65.6°F66.3°F-0.7°NCLIMGRID
2016Sep55.7°F56.0°F-0.3°NCLIMGRID
2016Oct46.0°F45.5°F+0.5°NCLIMGRID
2016Nov42.8°F32.1°F+10.7°NCLIMGRID
2016Dec14.4°F23.2°F-8.8°NCLIMGRID
2017Jan16.5°F19.1°F-2.6°NCLIMGRID
2017Feb24.8°F26.0°F-1.2°NCLIMGRID
2017Mar37.1°F33.0°F+4.2°NCLIMGRID
2017Apr44.2°F42.6°F+1.5°NCLIMGRID
2017May54.7°F52.1°F+2.6°NCLIMGRID
2017Jun61.9°F60.8°F+1.1°NCLIMGRID
2017Jul73.3°F67.1°F+6.2°NCLIMGRID
2017Aug67.0°F66.3°F+0.7°NCLIMGRID
2017Sep56.9°F56.0°F+0.9°NCLIMGRID
2017Oct45.1°F45.5°F-0.4°NCLIMGRID
2017Nov32.4°F32.1°F+0.3°NCLIMGRID
2017Dec21.1°F23.2°F-2.1°NCLIMGRID
2018Jan25.6°F19.1°F+6.5°NCLIMGRID
2018Feb10.9°F26.0°F-15.1°NCLIMGRID
2018Mar29.3°F33.0°F-3.7°NCLIMGRID
2018Apr38.5°F42.6°F-4.1°NCLIMGRID
2018May57.5°F52.1°F+5.4°NCLIMGRID
2018Jun60.3°F60.8°F-0.5°NCLIMGRID
2018Jul67.4°F67.1°F+0.2°NCLIMGRID
2018Aug66.4°F66.3°F+0.1°NCLIMGRID
2018Sep54.2°F56.0°F-1.8°NCLIMGRID
2018Oct44.0°F45.5°F-1.5°NCLIMGRID
2018Nov32.8°F32.1°F+0.7°NCLIMGRID
2018Dec28.8°F23.2°F+5.6°NCLIMGRID
2019Jan28.1°F19.1°F+9.0°NCLIMGRID
2019Feb-0.9°F26.0°F-26.9°NCLIMGRID
2019Mar23.6°F33.0°F-9.4°NCLIMGRID
2019Apr43.3°F42.6°F+0.7°NCLIMGRID
2019May49.4°F52.1°F-2.7°NCLIMGRID
2019Jun60.0°F60.8°F-0.8°NCLIMGRID
2019Jul66.0°F67.1°F-1.2°NCLIMGRID
2019Aug66.7°F66.3°F+0.4°NCLIMGRID
2019Sep56.2°F56.0°F+0.1°NCLIMGRID
2019Oct36.0°F45.5°F-9.5°NCLIMGRID
2019Nov30.4°F32.1°F-1.8°NCLIMGRID
2019Dec30.3°F23.2°F+7.2°NCLIMGRID
2020Jan25.2°F19.1°F+6.1°NCLIMGRID
2020Feb29.4°F26.0°F+3.4°NCLIMGRID
2020Mar31.4°F33.0°F-1.6°NCLIMGRID
2020Apr39.0°F42.6°F-3.6°NCLIMGRID
2020May51.4°F52.1°F-0.7°NCLIMGRID
2020Jun60.4°F60.8°F-0.4°NCLIMGRID
2020Jul66.1°F67.1°F-1.1°NCLIMGRID
2020Aug68.9°F66.3°F+2.6°NCLIMGRID
2020Sep58.5°F56.0°F+2.5°NCLIMGRID
2020Oct40.3°F45.5°F-5.2°NCLIMGRID
2020Nov36.4°F32.1°F+4.2°NCLIMGRID
2020Dec33.3°F23.2°F+10.1°NCLIMGRID
2021Jan30.2°F19.1°F+11.1°NCLIMGRID
2021Feb12.0°F26.0°F-14.0°NCLIMGRID
2021Mar39.1°F33.0°F+6.1°NCLIMGRID
2021Apr41.7°F42.6°F-0.9°NCLIMGRID
2021May49.0°F52.1°F-3.1°NCLIMGRID
2021Jun65.3°F60.8°F+4.5°NCLIMGRID
2021Jul73.4°F67.1°F+6.3°NCLIMGRID
2021Aug66.1°F66.3°F-0.2°NCLIMGRID
2021Sep59.9°F56.0°F+3.9°NCLIMGRID
2021Oct47.8°F45.5°F+2.3°NCLIMGRID
2021Nov39.7°F32.1°F+7.6°NCLIMGRID
2021Dec19.0°F23.2°F-4.2°NCLIMGRID
2022Jan26.7°F19.1°F+7.5°NCLIMGRID
2022Feb24.6°F26.0°F-1.4°NCLIMGRID
2022Mar36.3°F33.0°F+3.3°NCLIMGRID
2022Apr37.0°F42.6°F-5.6°NCLIMGRID
2022May50.6°F52.1°F-1.5°NCLIMGRID
2022Jun59.9°F60.8°F-0.9°NCLIMGRID
2022Jul71.0°F67.1°F+3.9°NCLIMGRID
2022Aug72.4°F66.3°F+6.1°NCLIMGRID
2022Sep62.3°F56.0°F+6.3°NCLIMGRID
2022Oct49.4°F45.5°F+3.9°NCLIMGRID
2022Nov23.6°F32.1°F-8.6°NCLIMGRID
2022Dec16.3°F23.2°F-6.9°NCLIMGRID
2023Jan28.6°F19.1°F+9.5°NCLIMGRID
2023Feb27.6°F26.0°F+1.6°NCLIMGRID
2023Mar26.0°F33.0°F-7.0°NCLIMGRID
2023Apr42.0°F42.6°F-0.6°NCLIMGRID
2023May58.0°F52.1°F+5.9°NCLIMGRID
2023Jun61.2°F60.8°F+0.4°NCLIMGRID
2023Jul69.3°F67.1°F+2.2°NCLIMGRID
2023Aug69.2°F66.3°F+2.9°NCLIMGRID
2023Sep60.7°F56.0°F+4.6°NCLIMGRID
2023Oct43.8°F45.5°F-1.7°NCLIMGRID
2023Nov38.6°F32.1°F+6.4°NCLIMGRID
2023Dec37.0°F23.2°F+13.8°NCLIMGRID
2024Jan20.4°F19.1°F+1.2°NCLIMGRID
2024Feb28.4°F26.0°F+2.4°NCLIMGRID
2024Mar31.3°F33.0°F-1.7°NCLIMGRID
2024Apr44.5°F42.6°F+1.9°NCLIMGRID
2024May50.5°F52.1°F-1.7°NCLIMGRID
2024Jun59.8°F60.8°F-0.9°NCLIMGRID
2024Jul71.3°F67.1°F+4.2°NCLIMGRID
2024Aug67.5°F66.3°F+1.2°NCLIMGRID
2024Sep63.1°F56.0°F+7.0°NCLIMGRID
2024Oct51.2°F45.5°F+5.7°NCLIMGRID
2024Nov31.0°F32.1°F-1.1°NCLIMGRID
2024Dec34.3°F23.2°F+11.2°NCLIMGRID
2025Jan21.5°F19.1°F+2.4°NCLIMGRID
2025Feb11.4°F26.0°F-14.6°NCLIMGRID
2025Mar40.1°F33.0°F+7.1°NCLIMGRID
2025Apr43.7°F42.6°F+1.1°NCLIMGRID
2025May55.8°F52.1°F+3.7°NCLIMGRID
2025Jun61.4°F60.8°F+0.6°NCLIMGRID
2025Jul68.0°F67.1°F+0.9°NCLIMGRID
2025Aug68.3°F66.3°F+2.1°NCLIMGRID
2025Sep63.7°F56.0°F+7.6°NCLIMGRID
2025Oct46.7°F45.5°F+1.2°NCLIMGRID
2025Nov39.1°F32.1°F+7.0°NCLIMGRID
2025Dec32.5°F23.2°F+9.3°NCLIMGRID
2026Jan33.0°F19.1°F+13.9°NCLIMGRID
2026Feb32.6°F26.0°F+6.7°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
January19.1°F26/26
February26.0°F26/26
March33.0°F26/26
April42.6°F26/26
May52.1°F26/26
June60.8°F26/26
July67.1°F26/26
August66.3°F26/26
September56.0°F26/26
October45.5°F26/26
November32.1°F26/26
December23.2°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 Malmstrom AFB, Montana getting warmer?

Based on 96+ years of NOAA temperature records, Malmstrom AFB has warmed at a rate of approximately 0.22°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 Malmstrom AFB?

The warmest year on record in Malmstrom AFB was 1987, based on average annual temperature anomaly from NOAA station data.

Where does the temperature data for Malmstrom AFB 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 Malmstrom AFB's climate profile.

How are the climate visualizations for Malmstrom AFB created?

Three visualizations are generated from Malmstrom AFB'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 Malmstrom AFB's temperature data?

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

Wear Malmstrom AFB's Climate Story

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

Shop Malmstrom AFB Climate Apparel →

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