Is this weather normal in Greene County?

Illinois · county records since 1895, through September 2026.

Weather › Illinois › Greene County

Greene County just had its warmest September ever recorded, +8° against the usual. Greene County is in severe drought: NOAA's Palmer reading for September was -3.2.

This week

Usual for Oct 28 to Nov 3: highs near 60°, lows near 39°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +5.7°OctNov: +2.0°NovDec: -0.9°DecJan 2026: -2.4°JanFeb: +4.0°FebMar: +7.3°MarApr: +6.6°AprMay: -0.6°MayJun: +0.4°JunJul: +1.6°JulAug: +0.9°AugSep: +8.0°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: -1.6 inOctNov: -1.2 inNovDec: -1.7 inDecJan 2026: -1.6 inJanFeb: -1.5 inFebMar: +1.3 inMarApr: +2.1 inAprMay: -1.6 inMayJun: +0.6 inJunJul: -0.9 inJulAug: -0.9 inAugSep: -2.1 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 Greene County

MonthUsual high / lowUsual rainWarmestColdest
January37° / 20°2.3 in39.6° 200611.6° 1977
February42° / 24°2.1 in42.8° 201718.0° 1978
March54° / 33°3.0 in56.9° 201227.7° 1960
April66° / 43°4.3 in61.4° 189645.6° 1907
May75° / 54°4.9 in73.0° 201857.7° 1924
June84° / 63°4.7 in79.5° 195367.0° 1903
July87° / 66°3.9 in85.5° 193671.4° 2009
August86° / 64°3.5 in83.4° 193668.4° 1915
September80° / 56°3.2 in75.8° 202660.2° 1918
October68° / 45°3.1 in65.7° 196347.0° 1925
November53° / 34°3.1 in51.2° 200135.2° 1976
December42° / 25°2.3 in42.4° 202117.7° 1983

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

Towns in Greene County

Crime Radar: Wilmington

Nearby counties