Rochelle Illinois Climate Data

Monthly Average Climate Data for Rochelle Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.4 °F28.7 °F1.68 in.
February16.0 °F33.0 °F1.68 in.
March26.3 °F45.4 °F2.2 in.
April36.8 °F59.3 °F3.56 in.
May48.7 °F70.6 °F4.65 in.
June58.5 °F79.7 °F5.06 in.
July61.9 °F82.6 °F3.97 in.
August59.8 °F81.0 °F3.89 in.
September51.5 °F75.1 °F3.45 in.
October39.8 °F62.2 °F2.78 in.
November29.2 °F47.2 °F2.31 in.
December18.6 °F34.1 °F1.89 in.
Annual38.3 °F58.2 °F37.12 in.

Climate Data for Rochelle 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 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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