Promise City Iowa Climate Data

Monthly Average Climate Data for Promise City Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F31.7 °F1.11 in.
February17.4 °F36.6 °F1.47 in.
March28.0 °F49.4 °F2.25 in.
April38.8 °F61.4 °F3.96 in.
May50.4 °F71.1 °F5.43 in.
June60.3 °F80.6 °F5.39 in.
July64.5 °F84.9 °F4.56 in.
August62.0 °F83.4 °F4.3 in.
September53.2 °F76.6 °F3.84 in.
October41.1 °F64.0 °F2.94 in.
November28.9 °F49.2 °F2.07 in.
December19.2 °F36.9 °F1.52 in.
Annual39.8 °F60.5 °F38.84 in.

Climate Data for Promise City Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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