Willow Springs Illinois Climate Data

Monthly Average Climate Data for Willow Springs Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.2 °C-0.1 °C56.39 mm
February-6.6 °C2 °C52.83 mm
March-1.4 °C8.2 °C60.71 mm
April4.4 °C15.6 °C101.35 mm
May10.3 °C21.7 °C123.19 mm
June15.9 °C27.3 °C112.27 mm
July18.6 °C29.8 °C106.68 mm
August17.8 °C28.6 °C105.92 mm
September13.5 °C25 °C81.79 mm
October6.7 °C17.6 °C88.9 mm
November0.6 °C9.6 °C64.26 mm
December-5.1 °C2.9 °C59.18 mm
Annual5.5 °C15.7 °C1013.47 mm

Climate Data for Willow Springs Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°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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