Chatsworth Illinois Climate Data

Monthly Average Climate Data for Chatsworth Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.3 °F32.6 °F2.25 in.
February19.4 °F37.3 °F1.87 in.
March28.9 °F49.1 °F2.63 in.
April39.3 °F62.7 °F3.78 in.
May51.1 °F73.7 °F4.41 in.
June60.6 °F82.3 °F4.5 in.
July63.6 °F84.9 °F4.36 in.
August61.2 °F83.3 °F3.68 in.
September53.1 °F78.5 °F2.91 in.
October41.8 °F65.8 °F3.19 in.
November31.4 °F50.4 °F2.73 in.
December21.7 °F37.5 °F2.03 in.
Annual40.7 °F61.5 °F38.34 in.

Climate Data for Chatsworth 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 6a : -10°F to -5°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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