Westervelt Illinois Climate Data

Monthly Average Climate Data for Westervelt Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.8 °C2.1 °C62.23 mm
February-5.2 °C4.9 °C52.58 mm
March-0.1 °C11 °C72.64 mm
April5.8 °C18.1 °C114.3 mm
May12.1 °C23.8 °C119.63 mm
June16.9 °C28.6 °C121.41 mm
July18.6 °C30.3 °C98.3 mm
August17.4 °C29.7 °C78.49 mm
September12.9 °C26.8 °C78.49 mm
October6.6 °C19.9 °C86.36 mm
November0.7 °C11.4 °C87.63 mm
December-3.8 °C4.8 °C64.77 mm
Annual6.3 °C17.6 °C1036.83 mm

Climate Data for Westervelt Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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