Gilson Illinois Climate Data

Monthly Average Climate Data for Gilson Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.8 °F31.6 °F1.86 in.
February18.2 °F36.2 °F1.98 in.
March28.6 °F49.1 °F2.48 in.
April39.1 °F62.1 °F3.82 in.
May51.3 °F72.6 °F5.13 in.
June61.0 °F81.5 °F4.71 in.
July64.2 °F84.5 °F3.98 in.
August62.0 °F83.0 °F3.61 in.
September53.7 °F77.2 °F3.72 in.
October41.8 °F64.7 °F2.92 in.
November30.5 °F49.5 °F2.47 in.
December20.7 °F37.0 °F2.01 in.
Annual40.5 °F60.8 °F38.69 in.

Climate Data for Gilson Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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