Harvey Iowa Climate Data

Monthly Average Climate Data for Harvey Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.0 °F31.2 °F1.09 in.
February17.3 °F35.9 °F1.42 in.
March28.4 °F49.0 °F2.08 in.
April39.9 °F61.7 °F3.84 in.
May51.9 °F72.1 °F5.23 in.
June62.2 °F82.1 °F4.91 in.
July65.3 °F86.0 °F4.26 in.
August63.4 °F83.8 °F4.12 in.
September54.2 °F76.7 °F3.55 in.
October42.2 °F64.9 °F2.59 in.
November30.0 °F48.3 °F2.03 in.
December19.5 °F36.4 °F1.39 in.
Annual40.7 °F60.7 °F36.51 in.

Climate Data for Harvey Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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