Dayton Iowa Climate Data

Monthly Average Climate Data for Dayton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January9.9 °F27.5 °F0.91 in.
February13.9 °F32.0 °F1.14 in.
March25.6 °F45.4 °F2.05 in.
April36.7 °F59.9 °F3.75 in.
May49.2 °F70.8 °F5.04 in.
June59.8 °F80.5 °F5.4 in.
July63.3 °F83.7 °F4.3 in.
August60.7 °F81.4 °F4.41 in.
September51.8 °F75.8 °F3.23 in.
October39.2 °F62.7 °F2.65 in.
November26.9 °F46.5 °F1.74 in.
December16.1 °F32.9 °F1.37 in.
Annual37.8 °F58.3 °F35.99 in.

Climate Data for Dayton Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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