Leonore Illinois Climate Data

Monthly Average Climate Data for Leonore Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.7 °F31.5 °F1.9 in.
February19.2 °F36.0 °F1.79 in.
March28.8 °F48.4 °F2.47 in.
April39.2 °F61.8 °F3.55 in.
May51.1 °F72.9 °F4.6 in.
June60.7 °F81.7 °F4.37 in.
July64.2 °F84.5 °F3.87 in.
August62.1 °F82.7 °F3.7 in.
September53.9 °F77.5 °F3.39 in.
October42.2 °F64.9 °F3.01 in.
November31.3 °F49.5 °F2.57 in.
December21.5 °F36.8 °F2.04 in.
Annual40.8 °F60.7 °F37.26 in.

Climate Data for Leonore Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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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