Roscoe Illinois Climate Data

Monthly Average Climate Data for Roscoe Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.6 °F28.3 °F1.65 in.
February15.7 °F32.5 °F1.64 in.
March26.1 °F44.7 °F2.12 in.
April36.9 °F57.8 °F3.66 in.
May48.3 °F69.5 °F4.36 in.
June58.4 °F79.4 °F5.41 in.
July62.3 °F82.9 °F3.79 in.
August60.6 °F81.4 °F4.2 in.
September52.2 °F74.7 °F3.78 in.
October40.7 °F61.7 °F2.92 in.
November29.3 °F46.4 °F2.4 in.
December19.3 °F34.0 °F1.97 in.
Annual38.5 °F57.8 °F37.9 in.

Climate Data for Roscoe 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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