Clinton Iowa Climate Data

Monthly Average Climate Data for Clinton Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.2 °C-1.2 °C39.12 mm
February-8.2 °C1.3 °C44.96 mm
March-2.2 °C8.4 °C63.25 mm
April3.9 °C15.9 °C91.44 mm
May10.5 °C22.2 °C113.54 mm
June16.1 °C27.3 °C127 mm
July18 °C29 °C101.6 mm
August16.8 °C27.9 °C99.06 mm
September12.2 °C24.6 °C92.71 mm
October5.7 °C17.4 °C69.34 mm
November-0.9 °C8.9 °C58.93 mm
December-6.7 °C1.8 °C48.51 mm
Annual4.6 °C15.3 °C949.46 mm

Climate Data for Clinton 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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