Is this weather normal in Fallon County?

Montana · county records since 1895, through September 2026.

Weather › Montana › Fallon County

10 of the last 12 months ran warmer than usual in Fallon County. Only 1 of Montana's 56 counties ran further above their usual September than Fallon County.

This week

Usual for Oct 28 to Nov 3: highs near 49°, lows near 25°

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

Loading the forecast...

usual high for the datewarmercooler

The last 12 months

Oct: +3.7°OctNov: +4.4°NovDec: +4.7°DecJan 2026: +4.3°JanFeb: +9.7°FebMar: +7.0°MarApr: -0.4°AprMay: +2.9°MayJun: -1.0°JunJul: +6.8°JulAug: +1.0°AugSep: +4.5°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: +1.9 inOctNov: +0.2 inNovDec: +0.8 inDecJan 2026: -0.1 inJanFeb: -0.2 inFebMar: -0.4 inMarApr: -0.3 inAprMay: -1.7 inMayJun: -0.6 inJunJul: -1.1 inJulAug: -0.6 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 Fallon County

MonthUsual high / lowUsual rainWarmestColdest
January29° / 7°0.4 in31.5° 2006-4.8° 1916
February33° / 11°0.4 in35.2° 1954-8.9° 1936
March44° / 20°0.6 in44.4° 201213.2° 1965
April55° / 30°1.6 in51.6° 191534.2° 1920
May66° / 40°2.8 in65.0° 193445.1° 1907
June76° / 50°2.7 in76.6° 198856.3° 1915
July85° / 56°2.0 in81.8° 193661.4° 1993
August84° / 54°1.4 in75.2° 198361.7° 1974
September73° / 44°1.5 in65.9° 202445.1° 1965
October57° / 31°1.2 in53.6° 196332.8° 1925
November42° / 19°0.5 in40.6° 194910.0° 1896
December31° / 10°0.4 in30.4° 19570.0° 1983

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

Towns in Fallon County

Nearby counties