Berkeley Illinois Climate Data

Monthly Average Climate Data for Berkeley Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.3 °C-0.2 °C54.61 mm
February-6.9 °C1.9 °C54.61 mm
March-1.7 °C7.9 °C59.18 mm
April4.1 °C14.8 °C100.08 mm
May10.1 °C21.1 °C119.38 mm
June15.7 °C26.7 °C112.52 mm
July18.6 °C29.1 °C97.03 mm
August17.7 °C28.1 °C104.9 mm
September13.3 °C24.4 °C85.09 mm
October6.6 °C17.2 °C87.63 mm
November0.3 °C9.3 °C65.28 mm
December-5.2 °C2.7 °C58.17 mm
Annual5.4 °C15.3 °C998.48 mm

Climate Data for Berkeley 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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