McLeansboro Illinois Climate Data

Monthly Average Climate Data for McLeansboro Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.8 °C4.4 °C92.46 mm
February-3.3 °C7.2 °C71.88 mm
March1.6 °C12.8 °C106.17 mm
April7.2 °C19.3 °C128.27 mm
May12.9 °C24.4 °C132.08 mm
June17.9 °C29.1 °C113.28 mm
July19.6 °C31.1 °C95.76 mm
August18.4 °C30.7 °C72.39 mm
September13.9 °C27.3 °C77.72 mm
October7.5 °C20.8 °C86.11 mm
November1.7 °C13 °C105.92 mm
December-2.7 °C6.8 °C88.9 mm
Annual7.5 °C18.9 °C1170.94 mm

Climate Data for McLeansboro Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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