Deer Park Illinois Climate Data

Monthly Average Climate Data for Deer Park Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.6 °F30.3 °F1.96 in.
February17.4 °F34.1 °F1.96 in.
March26.8 °F45.7 °F2.26 in.
April37.0 °F58.1 °F3.79 in.
May47.9 °F69.3 °F4.72 in.
June57.8 °F79.4 °F4.58 in.
July63.0 °F83.7 °F3.81 in.
August61.6 °F81.4 °F4.1 in.
September53.6 °F74.6 °F3.4 in.
October41.8 °F61.8 °F3.26 in.
November30.6 °F47.6 °F2.4 in.
December20.6 °F35.4 °F2.12 in.
Annual39.4 °F58.5 °F38.36 in.

Climate Data for Deer Park Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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