Corydon Iowa Climate Data

Monthly Average Climate Data for Corydon Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.2 °F31.6 °F1.11 in.
February17.1 °F36.3 °F1.44 in.
March27.8 °F49.2 °F2.27 in.
April38.6 °F61.1 °F3.92 in.
May50.3 °F70.8 °F5.44 in.
June60.2 °F80.2 °F5.62 in.
July64.5 °F84.8 °F4.58 in.
August62.0 °F83.1 °F4.29 in.
September53.0 °F76.6 °F3.83 in.
October40.9 °F63.9 °F2.96 in.
November28.5 °F49.0 °F2.0 in.
December18.8 °F36.9 °F1.53 in.
Annual39.6 °F60.3 °F38.99 in.

Climate Data for Corydon Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 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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