Is this weather normal in O'Brien County?

Iowa · county records since 1895, through September 2026.

Weather › Iowa › O'Brien County

11 of the last 12 months ran warmer than usual in O'Brien County. 7.4 inches fell in September, the 7th-most for a September there in 132 years.

This week

Usual for Oct 28 to Nov 3: highs near 52°, lows near 31°

That is the 1991 to 2020 average for these dates in O'Brien 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: +3.4°NovDec: -0.1°DecJan 2026: +1.3°JanFeb: +10.6°FebMar: +6.9°MarApr: +2.4°AprMay: +1.2°MayJun: +0.9°JunJul: +2.7°JulAug: +0.9°AugSep: +3.8°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: -0.9 inOctNov: +0.5 inNovDec: +0.1 inDecJan 2026: -0.4 inJanFeb: -0.8 inFebMar: -0.5 inMarApr: +0.4 inAprMay: -0.4 inMayJun: -1.3 inJunJul: -1.3 inJulAug: -0.6 inAugSep: +4.1 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 O'Brien County

MonthUsual high / lowUsual rainWarmestColdest
January25° / 8°0.7 in30.0° 2006-0.5° 1912
February30° / 12°0.8 in34.4° 2024-1.6° 1936
March43° / 24°1.7 in49.5° 201215.8° 1899
April58° / 35°3.3 in54.4° 195536.0° 2018
May70° / 47°4.3 in70.0° 193450.3° 1907
June80° / 58°4.8 in76.6° 193361.6° 1945
July83° / 62°3.5 in82.3° 193665.4° 1992
August81° / 59°3.6 in77.7° 194764.3° 1915
September74° / 50°3.3 in69.5° 189753.5° 1965
October61° / 38°2.3 in59.3° 196336.5° 1925
November44° / 24°1.4 in45.4° 200119.2° 1896
December30° / 13°1.0 in32.2° 20232.6° 1983

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

Towns in O'Brien County

Crime Radar: Sheldon

Nearby counties