South Wilmington Illinois Climate Data

Monthly Average Climate Data for South Wilmington Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9 °C-0.2 °C52.07 mm
February-7.3 °C2.1 °C45.72 mm
March-2.1 °C8.8 °C61.47 mm
April3.8 °C16.1 °C92.71 mm
May10.2 °C22.3 °C118.36 mm
June15.7 °C27.4 °C116.33 mm
July17.6 °C29.1 °C104.9 mm
August16.5 °C28.1 °C95.5 mm
September12 °C25.2 °C84.07 mm
October5.5 °C17.9 °C78.23 mm
November-0.3 °C9.7 °C64.01 mm
December-5.8 °C2.7 °C52.07 mm
Annual4.7 °C15.8 °C965.44 mm

Climate Data for South Wilmington Illinois

Average First Frost DateOct. 11 - Oct. 20
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 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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