Gilson Illinois Climate Data

Monthly Average Climate Data for Gilson Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.6 °C-0.2 °C47.24 mm
February-7.7 °C2.3 °C50.29 mm
March-1.9 °C9.5 °C62.99 mm
April3.9 °C16.7 °C97.03 mm
May10.7 °C22.6 °C130.3 mm
June16.1 °C27.5 °C119.63 mm
July17.9 °C29.2 °C101.09 mm
August16.7 °C28.3 °C91.69 mm
September12.1 °C25.1 °C94.49 mm
October5.4 °C18.2 °C74.17 mm
November-0.8 °C9.7 °C62.74 mm
December-6.3 °C2.8 °C51.05 mm
Annual4.7 °C16 °C982.71 mm

Climate Data for Gilson Illinois

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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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