Kewanee Illinois Climate Data

Monthly Average Climate Data for Kewanee Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.4 °F29.8 °F1.86 in.
February16.8 °F34.4 °F2.01 in.
March27.1 °F47.3 °F2.42 in.
April37.8 °F60.4 °F3.92 in.
May50.0 °F71.5 °F5.02 in.
June59.9 °F80.3 °F4.94 in.
July63.0 °F83.2 °F3.8 in.
August60.7 °F81.7 °F3.75 in.
September52.2 °F76.0 °F3.63 in.
October40.7 °F63.3 °F2.92 in.
November29.4 °F48.2 °F2.47 in.
December19.3 °F35.3 °F2.08 in.
Annual39.2 °F59.3 °F38.82 in.

Climate Data for Kewanee 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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