Bourbonnais Illinois Climate Data

Monthly Average Climate Data for Bourbonnais Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.8 °C0 °C56.13 mm
February-7 °C2.4 °C48.01 mm
March-1.8 °C8.9 °C60.71 mm
April3.8 °C16.2 °C95.76 mm
May10.2 °C22.4 °C114.81 mm
June15.7 °C27.4 °C120.9 mm
July17.7 °C29.1 °C114.3 mm
August16.6 °C28.3 °C97.28 mm
September12.1 °C25.3 °C80.77 mm
October5.7 °C18.1 °C84.58 mm
November-0.2 °C9.9 °C67.56 mm
December-5.6 °C2.9 °C55.88 mm
Annual4.9 °C15.9 °C996.69 mm

Climate Data for Bourbonnais Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation