Naplate Illinois Climate Data

Monthly Average Climate Data for Naplate Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.7 °F31.7 °F1.95 in.
February19.1 °F36.2 °F1.87 in.
March28.6 °F48.5 °F2.48 in.
April39.3 °F61.6 °F3.51 in.
May50.5 °F72.5 °F4.7 in.
June60.3 °F81.4 °F4.53 in.
July64.0 °F84.4 °F3.83 in.
August62.1 °F82.6 °F3.86 in.
September54.3 °F77.1 °F3.29 in.
October42.7 °F64.7 °F3.08 in.
November31.8 °F49.8 °F2.67 in.
December21.6 °F36.9 °F2.1 in.
Annual40.8 °F60.6 °F37.87 in.

Climate Data for Naplate 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 6a : -10°F to -5°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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