Is this weather normal in Roosevelt County?

Montana · county records since 1895, through September 2026.

Weather › Montana › Roosevelt County

Roosevelt County has warmed about 0.4° per decade since 1970. September 2026 averaged 61.1° there, 3.6° above the usual for September (15th warmest of 132).

This week

Usual for Oct 28 to Nov 3: highs near 47°, lows near 24°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +4.1°OctNov: +2.9°NovDec: -2.1°DecJan 2026: +3.3°JanFeb: +9.7°FebMar: +5.3°MarApr: -1.3°AprMay: +3.3°MayJun: -1.0°JunJul: +5.0°JulAug: +0.1°AugSep: +3.6°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: +0.1 inOctNov: +0.2 inNovDec: +0.2 inDecJan 2026: -0.2 inJanFeb: +0.0 inFebMar: +0.0 inMarApr: -0.5 inAprMay: -1.6 inMayJun: +0.7 inJunJul: -0.9 inJulAug: +0.2 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 Roosevelt County

MonthUsual high / lowUsual rainWarmestColdest
January22° / 2°0.4 in26.5° 2006-15.4° 1950
February27° / 6°0.3 in30.2° 1954-16.0° 1936
March41° / 18°0.5 in41.3° 20125.7° 1899
April56° / 29°1.0 in51.8° 191532.0° 1907
May67° / 40°2.3 in62.9° 193442.7° 1907
June76° / 49°3.1 in76.0° 198856.0° 1915
July84° / 55°2.3 in79.3° 193660.8° 1915
August84° / 53°1.4 in75.1° 198360.6° 1977
September72° / 43°1.1 in64.3° 202444.2° 1965
October56° / 30°0.9 in52.6° 196331.4° 1919
November38° / 17°0.4 in38.4° 19994.5° 1896
December26° / 6°0.4 in28.4° 2023-4.7° 1983

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

Towns in Roosevelt County

Nearby counties