Earlham Iowa Climate Data

Monthly Average Climate Data for Earlham Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.2 °C-1.2 °C22.86 mm
February-8.9 °C1.7 °C30.23 mm
March-2.9 °C8.8 °C51.82 mm
April3.3 °C16.3 °C92.46 mm
May9.9 °C21.9 °C125.22 mm
June15.6 °C27.1 °C128.02 mm
July17.8 °C29.3 °C106.17 mm
August16.4 °C28.3 °C100.84 mm
September11.6 °C24.8 °C89.15 mm
October4.7 °C17.8 °C67.31 mm
November-2.1 °C9.1 °C46.74 mm
December-8.1 °C1.6 °C33.27 mm
Annual3.8 °C15.5 °C894.09 mm

Climate Data for Earlham 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 5b : -26.1°C to -23.3°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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