Bannockburn Illinois Climate Data

Monthly Average Climate Data for Bannockburn Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.3 °C-0.6 °C56.13 mm
February-6.8 °C1.6 °C51.82 mm
March-1.9 °C7.2 °C57.66 mm
April3.7 °C13.6 °C98.3 mm
May9.7 °C20.1 °C114.05 mm
June15.3 °C25.8 °C111 mm
July18.4 °C28.3 °C96.27 mm
August17.9 °C27.4 °C99.57 mm
September13.6 °C23.7 °C93.47 mm
October6.9 °C16.7 °C85.09 mm
November0.6 °C8.8 °C63.75 mm
December-4.9 °C2.4 °C54.1 mm
Annual5.4 °C14.6 °C981.21 mm

Climate Data for Bannockburn 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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