Oak Park Illinois Climate Data

Monthly Average Climate Data for Oak Park Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.3 °F31.8 °F2.17 in.
February21.1 °F35.6 °F2.09 in.
March30.0 °F46.3 °F2.33 in.
April40.3 °F58.6 °F3.98 in.
May51.1 °F69.9 °F4.67 in.
June61.3 °F80.0 °F4.32 in.
July66.8 °F84.3 °F4.1 in.
August65.7 °F82.4 °F4.08 in.
September58.3 °F75.9 °F3.28 in.
October45.9 °F63.0 °F3.44 in.
November34.1 °F48.8 °F2.57 in.
December24.0 °F37.1 °F2.3 in.
Annual43.1 °F59.5 °F39.33 in.

Climate Data for Oak Park 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 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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