Oak Lawn Illinois Climate Data

Monthly Average Climate Data for Oak Lawn Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.9 °F32.0 °F2.16 in.
February20.7 °F35.7 °F2.05 in.
March30.0 °F46.5 °F2.38 in.
April40.3 °F59.5 °F3.95 in.
May51.2 °F70.6 °F4.73 in.
June61.4 °F80.6 °F4.31 in.
July66.3 °F85.0 °F4.36 in.
August64.7 °F82.9 °F4.18 in.
September57.1 °F76.6 °F3.21 in.
October44.8 °F63.5 °F3.44 in.
November33.7 °F49.1 °F2.55 in.
December23.6 °F37.3 °F2.34 in.
Annual42.6 °F59.9 °F39.66 in.

Climate Data for Oak Lawn 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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