Tonica Illinois Climate Data

Monthly Average Climate Data for Tonica Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.5 °F31.3 °F1.82 in.
February19.0 °F35.8 °F1.75 in.
March28.7 °F48.2 °F2.42 in.
April39.2 °F61.6 °F3.5 in.
May51.0 °F72.9 °F4.56 in.
June60.7 °F81.7 °F4.3 in.
July64.2 °F84.5 °F3.83 in.
August62.1 °F82.7 °F3.66 in.
September54.0 °F77.4 °F3.36 in.
October42.4 °F64.7 °F2.97 in.
November31.2 °F49.4 °F2.5 in.
December21.3 °F36.6 °F1.99 in.
Annual40.8 °F60.6 °F36.66 in.

Climate Data for Tonica Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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