Wenona Illinois Climate Data

Monthly Average Climate Data for Wenona Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F32.1 °F1.98 in.
February19.0 °F36.7 °F1.83 in.
March28.8 °F49.0 °F2.56 in.
April39.2 °F62.3 °F3.63 in.
May51.1 °F73.3 °F4.59 in.
June60.8 °F82.1 °F4.22 in.
July64.2 °F85.1 °F3.89 in.
August62.0 °F83.3 °F3.67 in.
September53.7 °F77.9 °F3.44 in.
October42.2 °F65.4 °F3.0 in.
November31.3 °F50.0 °F2.63 in.
December21.5 °F37.4 °F2.04 in.
Annual40.8 °F61.2 °F37.48 in.

Climate Data for Wenona Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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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