Deer Grove Illinois Climate Data

Monthly Average Climate Data for Deer Grove Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.6 °F29.9 °F1.72 in.
February17.4 °F34.4 °F1.71 in.
March27.6 °F46.9 °F2.39 in.
April38.5 °F60.7 °F3.61 in.
May50.4 °F71.9 °F4.82 in.
June60.2 °F80.9 °F5.1 in.
July63.5 °F83.8 °F4.07 in.
August61.3 °F82.1 °F4.06 in.
September53.0 °F76.3 °F3.46 in.
October41.4 °F63.7 °F2.96 in.
November30.0 °F48.2 °F2.31 in.
December19.9 °F35.4 °F1.91 in.
Annual39.7 °F59.5 °F38.12 in.

Climate Data for Deer Grove 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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