Is this weather normal in Washington County?

Pennsylvania · county records since 1895, through September 2026.

Weather › Pennsylvania › Washington County

Washington County's warmest year in 131 on record was 2024, at 54.8° on average. Washington County has warmed about 0.5° per decade since 1970.

This week

Usual for Oct 28 to Nov 3: highs near 58°, lows near 38°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +0.1°OctNov: -1.5°NovDec: -3.5°DecJan 2026: -5.8°JanFeb: -2.4°FebMar: +6.8°MarApr: +5.9°AprMay: -3.1°MayJun: -0.6°JunJul: +1.4°JulAug: -0.1°AugSep: +2.6°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: -0.2 inOctNov: -1.1 inNovDec: -1.3 inDecJan 2026: -1.4 inJanFeb: -1.6 inFebMar: +2.4 inMarApr: +0.3 inAprMay: +0.3 inMayJun: -0.9 inJunJul: +0.5 inJulAug: +3.5 inAugSep: +1.2 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 Washington County

MonthUsual high / lowUsual rainWarmestColdest
January37° / 21°3.2 in40.2° 195012.2° 1977
February41° / 23°2.7 in40.5° 201718.1° 1979
March50° / 30°3.4 in50.9° 201225.7° 1960
April63° / 39°3.6 in56.9° 202643.5° 1907
May72° / 48°4.3 in67.1° 199153.7° 1917
June80° / 57°4.3 in73.9° 193463.1° 1927
July83° / 61°4.1 in77.0° 190168.0° 2009
August82° / 60°3.8 in75.6° 199564.9° 1927
September76° / 53°3.5 in69.4° 190058.1° 1918
October64° / 42°3.1 in59.6° 202145.6° 1925
November52° / 33°2.9 in48.8° 193133.3° 1976
December42° / 26°3.2 in44.8° 201519.0° 1989

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

Towns in Washington County

Crime Radar: Monessen, Canonsburg, Monongahela

Nearby counties