Wonder Lake Illinois Climate Data

Monthly Average Climate Data for Wonder Lake Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F29.1 °F1.78 in.
February16.3 °F33.0 °F1.87 in.
March25.6 °F44.5 °F2.22 in.
April36.1 °F57.5 °F3.82 in.
May47.2 °F69.1 °F4.57 in.
June57.1 °F78.8 °F4.94 in.
July61.6 °F82.8 °F3.87 in.
August59.9 °F81.0 °F3.89 in.
September52.0 °F74.4 °F3.61 in.
October40.6 °F61.2 °F3.12 in.
November29.9 °F46.8 °F2.45 in.
December19.5 °F34.3 °F2.01 in.
Annual38.3 °F57.7 °F38.15 in.

Climate Data for Wonder Lake 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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