Is this weather normal in Plymouth County?

Iowa · county records since 1895, through September 2026.

Weather › Iowa › Plymouth County

Every one of the last 12 months ran warmer than usual in Plymouth County. Plymouth County just had its 5th-warmest September in 132 years, +5° against the usual.

This week

Usual for Oct 28 to Nov 3: highs near 54°, lows near 32°

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

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usual high for the datewarmercooler

The last 12 months

Oct: +6.2°OctNov: +3.2°NovDec: +1.0°DecJan 2026: +1.7°JanFeb: +9.8°FebMar: +6.4°MarApr: +2.2°AprMay: +0.8°MayJun: +0.7°JunJul: +3.1°JulAug: +0.8°AugSep: +4.7°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: -1.0 inOctNov: -0.2 inNovDec: -0.2 inDecJan 2026: -0.5 inJanFeb: -0.8 inFebMar: -0.8 inMarApr: +0.3 inAprMay: -0.1 inMayJun: -2.6 inJunJul: +0.8 inJulAug: -1.3 inAugSep: +3.3 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 Plymouth County

MonthUsual high / lowUsual rainWarmestColdest
January27° / 10°0.7 in32.7° 20062.2° 1912
February33° / 14°0.8 in35.7° 2024-1.0° 1936
March46° / 25°1.6 in51.5° 201217.5° 1960
April60° / 36°3.0 in55.9° 195538.0° 2018
May71° / 48°4.2 in70.2° 193451.7° 1907
June81° / 59°4.6 in77.2° 193361.8° 1945
July84° / 62°3.5 in83.4° 193666.9° 1992
August82° / 60°3.6 in78.6° 198364.3° 1915
September76° / 51°3.1 in70.2° 189754.7° 1965
October62° / 38°2.4 in59.4° 196336.7° 1925
November46° / 25°1.3 in45.9° 200120.5° 1896
December32° / 15°1.0 in32.6° 20232.9° 1983

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

Towns in Plymouth County

Crime Radar: Le Mars

Nearby counties