Mount Carroll Illinois Climate Data

Monthly Average Climate Data for Mount Carroll Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.8 °F29.2 °F1.57 in.
February15.5 °F33.7 °F1.76 in.
March26.0 °F46.0 °F2.39 in.
April36.6 °F59.8 °F3.8 in.
May48.3 °F71.6 °F4.55 in.
June58.2 °F80.8 °F5.41 in.
July61.6 °F83.7 °F4.69 in.
August59.3 °F82.2 °F3.91 in.
September50.8 °F76.0 °F3.64 in.
October39.4 °F63.1 °F2.91 in.
November28.4 °F47.4 °F2.36 in.
December18.1 °F34.6 °F2.04 in.
Annual37.8 °F59 °F39.03 in.

Climate Data for Mount Carroll Illinois

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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