Gurnee Illinois Climate Data

Monthly Average Climate Data for Gurnee Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.9 °C-0.8 °C53.09 mm
February-7.4 °C1.1 °C52.58 mm
March-2.3 °C6.6 °C56.9 mm
April3.2 °C12.7 °C94.49 mm
May9.1 °C19 °C109.98 mm
June14.8 °C24.6 °C108.46 mm
July17.9 °C27.3 °C88.39 mm
August17.4 °C26.6 °C89.92 mm
September13 °C22.9 °C87.63 mm
October6.4 °C16.1 °C80.52 mm
November0.1 °C8.6 °C62.99 mm
December-5.4 °C2.1 °C55.12 mm
Annual4.8 °C13.9 °C940.07 mm

Climate Data for Gurnee Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
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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