Is this weather normal in Jefferson County?

Washington · county records since 1895, through September 2026.

Weather › Washington › Jefferson County

10 of the last 12 months ran warmer than usual in Jefferson County. Jefferson County has warmed about 0.4° per decade since 1970.

This week

Usual for Oct 28 to Nov 3: highs near 49°, lows near 37°

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

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usual high for the datewarmercooler

The last 12 months

Oct: 0.0°OctNov: +2.8°NovDec: +4.2°DecJan 2026: +2.8°JanFeb: +1.8°FebMar: +0.1°MarApr: +2.5°AprMay: +2.9°MayJun: +2.8°JunJul: +0.1°JulAug: +1.2°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: -2.4 inNovDec: +6.4 inDecJan 2026: -3.6 inJanFeb: -1.6 inFebMar: +0.9 inMarApr: -4.0 inAprMay: -2.3 inMayJun: -0.3 inJunJul: +0.0 inJulAug: -1.2 inAugSep: +0.5 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 Jefferson County

MonthUsual high / lowUsual rainWarmestColdest
January42° / 31°16.4 in40.5° 201021.1° 1950
February43° / 31°11.2 in42.7° 201528.2° 1936
March46° / 32°12.6 in44.1° 199232.7° 1897
April51° / 35°8.6 in48.2° 201637.5° 1955
May58° / 40°4.7 in53.2° 202343.3° 1920
June62° / 44°3.5 in58.5° 202148.7° 1971
July68° / 49°1.7 in62.6° 195853.7° 1932
August69° / 49°2.2 in63.3° 202254.3° 1973
September65° / 46°4.6 in59.0° 202050.7° 1933
October54° / 40°11.1 in52.1° 202242.6° 1905
November45° / 34°17.4 in45.0° 189929.7° 1985
December41° / 31°16.7 in40.5° 193929.2° 1983

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

Towns in Jefferson County

Nearby counties