McCullom Lake Illinois Climate Data

Monthly Average Climate Data for McCullom Lake Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F29.1 °F1.78 in.
February16.3 °F33.0 °F1.84 in.
March25.8 °F44.5 °F2.21 in.
April36.3 °F57.5 °F3.77 in.
May47.0 °F69.1 °F4.62 in.
June57.3 °F78.8 °F4.91 in.
July61.9 °F82.8 °F3.86 in.
August60.3 °F81.1 °F3.86 in.
September52.3 °F74.4 °F3.6 in.
October40.7 °F61.3 °F3.14 in.
November30.0 °F46.8 °F2.42 in.
December19.6 °F34.5 °F2.0 in.
Annual38.4 °F57.7 °F38.01 in.

Climate Data for McCullom Lake Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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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