Energy Illinois Climate Data

Monthly Average Climate Data for Energy Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.4 °C5 °C87.12 mm
February-2.7 °C7.8 °C78.23 mm
March1.9 °C13.3 °C110.74 mm
April7.6 °C19.7 °C136.65 mm
May13.3 °C24.6 °C132.84 mm
June18 °C29.3 °C116.08 mm
July20 °C30.9 °C99.82 mm
August18.6 °C30.6 °C78.74 mm
September14.1 °C27.3 °C82.3 mm
October7.7 °C21 °C90.68 mm
November2.2 °C13.5 °C108.46 mm
December-2.3 °C7.3 °C91.19 mm
Annual7.8 °C19.2 °C1212.85 mm

Climate Data for Energy Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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