Winfield Illinois Climate Data

Monthly Average Climate Data for Winfield Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.0 °F30.9 °F2.07 in.
February17.7 °F34.8 °F2.0 in.
March27.3 °F46.6 °F2.35 in.
April37.6 °F59.5 °F3.88 in.
May48.6 °F70.8 °F4.9 in.
June58.5 °F80.6 °F4.5 in.
July63.2 °F84.5 °F3.81 in.
August61.6 °F82.4 °F4.07 in.
September53.7 °F76.0 °F3.33 in.
October41.6 °F62.9 °F3.52 in.
November30.6 °F48.2 °F2.58 in.
December20.8 °F36.0 °F2.23 in.
Annual39.7 °F59.4 °F39.24 in.

Climate Data for Winfield 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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