Oskaloosa Iowa Climate Data

Monthly Average Climate Data for Oskaloosa Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.0 °F30.3 °F1.15 in.
February16.8 °F35.1 °F1.58 in.
March27.4 °F48.1 °F2.1 in.
April39.0 °F61.4 °F3.8 in.
May51.1 °F71.6 °F5.06 in.
June61.6 °F81.5 °F5.1 in.
July64.5 °F85.2 °F4.26 in.
August62.4 °F83.0 °F4.41 in.
September53.3 °F76.4 °F3.59 in.
October41.2 °F64.2 °F2.69 in.
November29.4 °F48.2 °F2.25 in.
December18.9 °F35.8 °F1.45 in.
Annual39.9 °F60.1 °F37.44 in.

Climate Data for Oskaloosa Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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