North Chicago Illinois Climate Data

Monthly Average Climate Data for North Chicago Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.5 °C-0.7 °C53.85 mm
February-7 °C1.2 °C51.82 mm
March-2.1 °C6.4 °C54.61 mm
April3.4 °C12.3 °C97.79 mm
May9.1 °C18.4 °C112.52 mm
June14.7 °C23.9 °C107.44 mm
July18.2 °C26.9 °C93.98 mm
August18.1 °C26.2 °C95.25 mm
September13.7 °C22.7 °C88.14 mm
October7.1 °C16.1 °C81.53 mm
November0.6 °C8.7 °C64.01 mm
December-5.1 °C2.3 °C52.58 mm
Annual5.2 °C13.7 °C953.52 mm

Climate Data for North Chicago 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation