Is this weather normal in Big Horn County?

Montana · county records since 1895, through September 2026.

Weather › Montana › Big Horn County

11 of the last 12 months ran warmer than usual in Big Horn County. Big Horn County has warmed about 0.5° per decade since 1970.

This week

Usual for Oct 28 to Nov 3: highs near 51°, lows near 27°

That is the 1991 to 2020 average for these dates in Big Horn County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: +1.6°OctNov: +5.9°NovDec: +6.9°DecJan 2026: +6.4°JanFeb: +9.7°FebMar: +6.7°MarApr: +0.7°AprMay: +2.5°MayJun: -2.2°JunJul: +6.1°JulAug: +1.5°AugSep: +2.9°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.

Every year since 1895

18952025

Rain and drought

Oct: +1.5 inOctNov: -0.3 inNovDec: +0.8 inDecJan 2026: -0.5 inJanFeb: -0.2 inFebMar: +0.1 inMarApr: +0.0 inAprMay: -0.8 inMayJun: +0.2 inJunJul: -0.5 inJulAug: -0.1 inAugSep: +0.7 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Big Horn County

MonthUsual high / lowUsual rainWarmestColdest
January35° / 13°0.7 in34.3° 2006-2.1° 1916
February37° / 15°0.7 in37.2° 19540.0° 1936
March48° / 23°1.0 in44.6° 191016.8° 1897
April56° / 31°1.9 in52.2° 191535.1° 1920
May65° / 40°2.7 in61.2° 193447.6° 1907
June75° / 49°2.3 in72.4° 198854.3° 1951
July86° / 55°1.3 in77.2° 193660.0° 1993
August84° / 53°0.9 in74.1° 200362.4° 1974
September73° / 44°1.4 in64.7° 199845.7° 1965
October58° / 32°1.6 in52.3° 202434.8° 1919
November45° / 22°0.8 in43.2° 199913.5° 1896
December35° / 14°0.7 in36.5° 18963.9° 1983

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Big Horn County

Nearby counties