Is this weather normal in Cass County?

Iowa · county records since 1895, through September 2026.

Weather › Iowa › Cass County

11.2 inches fell in September, the 2nd-most for a September in Cass County in 132 years. Every one of the last 12 months ran warmer than usual there.

This week

Usual for Oct 28 to Nov 3: highs near 56°, lows near 34°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.1°OctNov: +2.4°NovDec: +0.7°DecJan 2026: +0.6°JanFeb: +7.9°FebMar: +6.0°MarApr: +3.7°AprMay: +0.2°MayJun: +0.3°JunJul: +2.5°JulAug: +0.7°AugSep: +5.0°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: -0.1 inOctNov: -0.7 inNovDec: -0.8 inDecJan 2026: +0.3 inJanFeb: -0.9 inFebMar: -0.6 inMarApr: +1.0 inAprMay: -2.1 inMayJun: -1.0 inJunJul: -1.6 inJulAug: +1.8 inAugSep: +7.6 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 Cass County

MonthUsual high / lowUsual rainWarmestColdest
January31° / 12°0.8 in34.5° 20064.9° 1912
February36° / 16°1.1 in38.1° 20245.6° 1936
March49° / 28°1.9 in53.6° 201219.8° 1960
April62° / 38°3.5 in57.6° 198141.5° 2018
May72° / 49°5.3 in69.4° 193454.3° 1907
June81° / 60°5.3 in78.1° 193363.4° 1945
July85° / 63°4.0 in84.6° 193668.5° 2009
August83° / 61°4.5 in80.9° 194765.7° 1915
September76° / 52°3.5 in71.4° 189757.7° 1993
October64° / 40°2.8 in62.4° 196340.0° 1925
November48° / 28°1.7 in47.8° 200128.5° 1896
December35° / 17°1.3 in35.4° 20236.8° 1983

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

Towns in Cass County

Crime Radar: Atlantic

Nearby counties