Itasca Illinois Climate Data

Monthly Average Climate Data for Itasca Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.0 °F31.1 °F2.1 in.
February18.6 °F35.0 °F2.02 in.
March28.2 °F46.1 °F2.29 in.
April38.3 °F58.4 °F3.8 in.
May49.3 °F69.8 °F4.77 in.
June59.3 °F79.8 °F4.51 in.
July64.6 °F84.1 °F3.67 in.
August63.1 °F82.1 °F4.1 in.
September54.9 °F75.4 °F3.36 in.
October42.8 °F62.4 °F3.34 in.
November31.6 °F48.1 °F2.57 in.
December21.9 °F36.4 °F2.23 in.
Annual40.7 °F59.1 °F38.76 in.

Climate Data for Itasca Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 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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