Early Iowa Climate Data

Monthly Average Climate Data for Early Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.9 °C-2.9 °C19.3 mm
February-10.7 °C-0.4 °C23.88 mm
March-4.1 °C7.2 °C46.23 mm
April2 °C14.8 °C89.66 mm
May9.1 °C21.3 °C114.81 mm
June15.2 °C26.8 °C130.56 mm
July17.1 °C28.3 °C90.68 mm
August15.6 °C27.1 °C111.25 mm
September10.6 °C24 °C75.18 mm
October3.6 °C16.6 °C59.44 mm
November-3.6 °C7.5 °C37.34 mm
December-9.5 °C-0.1 °C28.45 mm
Annual2.7 °C14.2 °C826.78 mm

Climate Data for Early Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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