Plattville Illinois Climate Data

Monthly Average Climate Data for Plattville Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.7 °F31.4 °F1.9 in.
February18.5 °F35.3 °F1.72 in.
March28.1 °F47.3 °F2.39 in.
April38.7 °F60.5 °F3.82 in.
May50.0 °F71.6 °F4.82 in.
June60.0 °F81.0 °F4.64 in.
July63.6 °F84.2 °F4.1 in.
August62.0 °F82.3 °F3.92 in.
September53.9 °F77.0 °F3.33 in.
October42.0 °F63.9 °F3.27 in.
November31.4 °F49.1 °F2.51 in.
December21.5 °F36.5 °F2.16 in.
Annual40.5 °F60 °F38.58 in.

Climate Data for Plattville 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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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