Hartford Iowa Climate Data

Monthly Average Climate Data for Hartford Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F30.9 °F0.99 in.
February17.3 °F35.5 °F1.3 in.
March28.2 °F48.5 °F2.05 in.
April39.6 °F62.0 °F3.77 in.
May51.7 °F71.9 °F5.15 in.
June61.8 °F81.6 °F5.2 in.
July65.7 °F85.3 °F4.26 in.
August63.2 °F83.7 °F4.16 in.
September54.4 °F77.2 °F3.54 in.
October42.1 °F63.9 °F2.6 in.
November29.9 °F48.9 °F1.74 in.
December19.2 °F36.0 °F1.28 in.
Annual40.6 °F60.5 °F36.04 in.

Climate Data for Hartford 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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