Strawn Illinois Climate Data

Monthly Average Climate Data for Strawn Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.4 °F32.5 °F2.13 in.
February19.7 °F37.2 °F1.82 in.
March29.0 °F49.0 °F2.57 in.
April39.7 °F62.3 °F3.68 in.
May51.6 °F73.5 °F4.4 in.
June61.0 °F82.0 °F4.35 in.
July64.0 °F84.7 °F4.14 in.
August61.7 °F83.1 °F3.55 in.
September53.8 °F78.4 °F3.1 in.
October42.3 °F65.5 °F3.23 in.
November31.6 °F50.3 °F2.66 in.
December22.0 °F37.5 °F2.08 in.
Annual41.1 °F61.3 °F37.71 in.

Climate Data for Strawn 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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