Is this weather normal in Sweet Grass County?

Montana · county records since 1895, through September 2026.

Weather › Montana › Sweet Grass County

Sweet Grass County is in severe drought: NOAA's Palmer reading for September was -3.7. 11 of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 48°, lows near 27°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +1.1°OctNov: +6.3°NovDec: +8.9°DecJan 2026: +6.0°JanFeb: +8.4°FebMar: +6.7°MarApr: +0.8°AprMay: +2.2°MayJun: -2.0°JunJul: +5.4°JulAug: +1.5°AugSep: +1.6°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: +0.4 inOctNov: -0.5 inNovDec: +0.9 inDecJan 2026: -0.7 inJanFeb: -0.1 inFebMar: +0.1 inMarApr: -1.0 inAprMay: -0.9 inMayJun: -0.9 inJunJul: -0.4 inJulAug: +0.3 inAugSep: +0.2 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 Sweet Grass County

MonthUsual high / lowUsual rainWarmestColdest
January35° / 17°0.9 in33.6° 19862.8° 1916
February37° / 16°1.0 in36.3° 19911.8° 1936
March45° / 23°1.4 in42.8° 191016.8° 1912
April51° / 29°2.2 in48.2° 191030.4° 1975
May61° / 37°3.1 in56.2° 193442.5° 1927
June70° / 44°2.8 in65.4° 198849.0° 1951
July80° / 50°1.6 in71.0° 200755.1° 1993
August79° / 49°1.3 in69.1° 197155.9° 1911
September69° / 41°1.5 in60.3° 199842.1° 1965
October54° / 32°1.7 in49.3° 196531.8° 1919
November42° / 23°1.2 in42.5° 199914.7° 1985
December34° / 16°1.0 in35.1° 18967.9° 1983

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

Towns in Sweet Grass County

Nearby counties