Energy Illinois Climate Data

Monthly Average Climate Data for Energy Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.0 °F41.0 °F3.43 in.
February27.1 °F46.1 °F3.08 in.
March35.5 °F56.0 °F4.36 in.
April45.6 °F67.4 °F5.38 in.
May56.0 °F76.2 °F5.23 in.
June64.4 °F84.8 °F4.57 in.
July68.0 °F87.7 °F3.93 in.
August65.5 °F87.0 °F3.1 in.
September57.4 °F81.2 °F3.24 in.
October45.8 °F69.8 °F3.57 in.
November35.9 °F56.3 °F4.27 in.
December27.9 °F45.2 °F3.59 in.
Annual46.1 °F66.6 °F47.75 in.

Climate Data for Energy Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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