McLeansboro Illinois Climate Data

Monthly Average Climate Data for McLeansboro Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.4 °F39.9 °F3.64 in.
February26.0 °F45.0 °F2.83 in.
March34.8 °F55.1 °F4.18 in.
April44.9 °F66.7 °F5.05 in.
May55.3 °F75.9 °F5.2 in.
June64.2 °F84.4 °F4.46 in.
July67.2 °F87.9 °F3.77 in.
August65.2 °F87.2 °F2.85 in.
September57.1 °F81.2 °F3.06 in.
October45.5 °F69.4 °F3.39 in.
November35.1 °F55.4 °F4.17 in.
December27.2 °F44.3 °F3.5 in.
Annual45.5 °F66 °F46.1 in.

Climate Data for McLeansboro 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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