Dayton Iowa Climate Data

Monthly Average Climate Data for Dayton Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.3 °C-2.5 °C23.11 mm
February-10.1 °C0 °C28.96 mm
March-3.6 °C7.4 °C52.07 mm
April2.6 °C15.5 °C95.25 mm
May9.6 °C21.6 °C128.02 mm
June15.4 °C26.9 °C137.16 mm
July17.4 °C28.7 °C109.22 mm
August15.9 °C27.4 °C112.01 mm
September11 °C24.3 °C82.04 mm
October4 °C17.1 °C67.31 mm
November-2.8 °C8.1 °C44.2 mm
December-8.8 °C0.5 °C34.8 mm
Annual3.2 °C14.6 °C914.15 mm

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 : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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