Chesterfield Illinois Climate Data

Monthly Average Climate Data for Chesterfield Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.3 °F36.3 °F2.35 in.
February23.7 °F41.7 °F2.1 in.
March32.8 °F52.7 °F3.1 in.
April43.3 °F65.2 °F4.51 in.
May54.5 °F74.9 °F4.96 in.
June63.5 °F83.4 °F4.18 in.
July66.6 °F86.4 °F3.65 in.
August64.6 °F85.4 °F3.46 in.
September56.0 °F79.6 °F3.28 in.
October44.8 °F67.6 °F3.25 in.
November34.3 °F53.1 °F3.28 in.
December25.3 °F41.3 °F2.44 in.
Annual44.1 °F64 °F40.56 in.

Climate Data for Chesterfield Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
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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