Des Plaines Illinois Climate Data

Monthly Average Climate Data for Des Plaines Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.8 °F31.5 °F2.07 in.
February19.5 °F35.2 °F1.93 in.
March28.7 °F45.9 °F2.28 in.
April38.9 °F57.8 °F3.79 in.
May49.8 °F69.1 °F4.63 in.
June59.9 °F79.3 °F4.41 in.
July65.3 °F83.6 °F3.61 in.
August63.9 °F81.8 °F3.99 in.
September55.9 °F75.2 °F3.34 in.
October43.8 °F62.5 °F3.25 in.
November32.4 °F48.3 °F2.52 in.
December22.7 °F36.7 °F2.2 in.
Annual41.5 °F58.9 °F38.02 in.

Climate Data for Des Plaines 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 : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation