Wheaton Illinois Climate Data

Monthly Average Climate Data for Wheaton Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.2 °C-0.6 °C53.59 mm
February-7.7 °C1.7 °C52.07 mm
March-2.4 °C8.2 °C59.44 mm
April3.3 °C15.3 °C98.81 mm
May9.4 °C21.6 °C124.21 mm
June15 °C27 °C115.57 mm
July17.7 °C29.2 °C96.01 mm
August16.8 °C28.1 °C105.16 mm
September12.3 °C24.5 °C85.09 mm
October5.6 °C17.2 °C89.15 mm
November-0.6 °C9.1 °C65.79 mm
December-6 °C2.3 °C57.15 mm
Annual4.5 °C15.3 °C1002.04 mm

Climate Data for Wheaton 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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