Harvel Illinois Climate Data

Monthly Average Climate Data for Harvel Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.7 °F35.6 °F2.37 in.
February23.3 °F40.8 °F2.02 in.
March32.3 °F52.1 °F2.82 in.
April42.7 °F64.8 °F4.33 in.
May53.9 °F74.9 °F4.76 in.
June62.9 °F83.4 °F4.38 in.
July65.8 °F86.4 °F3.73 in.
August63.6 °F85.3 °F3.26 in.
September55.4 °F80.0 °F3.24 in.
October44.1 °F67.7 °F3.28 in.
November33.8 °F52.5 °F3.27 in.
December25.0 °F40.7 °F2.36 in.
Annual43.5 °F63.7 °F39.82 in.

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