Johnsonville Illinois Climate Data

Monthly Average Climate Data for Johnsonville Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.7 °F38.9 °F3.31 in.
February25.7 °F43.7 °F2.62 in.
March34.3 °F54.2 °F3.8 in.
April44.6 °F66.3 °F4.97 in.
May55.4 °F75.9 °F4.97 in.
June64.3 °F84.7 °F4.87 in.
July67.3 °F87.6 °F4.03 in.
August64.9 °F86.7 °F3.41 in.
September56.8 °F80.9 °F3.3 in.
October45.5 °F69.3 °F3.43 in.
November35.2 °F54.6 °F3.97 in.
December27.2 °F43.1 °F3.13 in.
Annual45.3 °F65.5 °F45.81 in.

Climate Data for Johnsonville Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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