Is this weather normal in Montgomery County?

Illinois · county records since 1895, through September 2026.

Weather › Illinois › Montgomery County

Montgomery County just had its warmest September ever recorded, +8° against the usual. Montgomery County has warmed about 0.4° per decade since 1970.

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 Montgomery County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: +4.3°OctNov: +2.2°NovDec: -1.2°DecJan 2026: -3.0°JanFeb: +3.0°FebMar: +8.0°MarApr: +6.5°AprMay: -1.6°MayJun: -0.2°JunJul: +0.8°JulAug: +0.9°AugSep: +7.7°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: -0.7 inOctNov: -1.3 inNovDec: -1.6 inDecJan 2026: -1.0 inJanFeb: -1.1 inFebMar: +2.8 inMarApr: +2.5 inAprMay: -0.5 inMayJun: +2.9 inJunJul: -1.3 inJulAug: -0.5 inAugSep: -2.2 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 Montgomery County

MonthUsual high / lowUsual rainWarmestColdest
January36° / 21°2.5 in39.6° 200612.2° 1977
February42° / 24°2.2 in43.2° 201718.9° 1895
March53° / 33°3.0 in56.8° 201227.1° 1960
April65° / 43°4.6 in60.6° 202643.1° 1907
May75° / 54°4.8 in72.2° 201856.1° 1907
June84° / 63°4.4 in78.9° 193466.1° 1928
July87° / 66°3.8 in83.8° 193671.0° 2014
August85° / 64°3.4 in82.2° 193667.3° 1915
September80° / 56°3.1 in75.4° 202659.8° 1918
October68° / 45°3.3 in64.7° 196346.4° 1917
November53° / 34°3.3 in51.3° 190935.3° 1951
December41° / 25°2.5 in42.5° 202119.0° 1983

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

Towns in Montgomery County

Crime Radar: Litchfield, Hillsboro

Nearby counties