Blue Island Illinois Climate Data

Monthly Average Climate Data for Blue Island Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-7.8 °C0.1 °C55.63 mm
February-6.3 °C2.2 °C52.83 mm
March-1.2 °C8.2 °C60.45 mm
April4.4 °C15.2 °C99.06 mm
May10.5 °C21.3 °C116.08 mm
June16.1 °C26.8 °C111.51 mm
July18.8 °C29.2 °C111.25 mm
August18 °C28.1 °C106.17 mm
September13.8 °C24.7 °C82.55 mm
October7 °C17.4 °C88.65 mm
November0.9 °C9.6 °C67.56 mm
December-4.8 °C2.9 °C58.42 mm
Annual5.8 °C15.5 °C1010.16 mm

Climate Data for Blue Island 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 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation