Bonfield Illinois Climate Data

Monthly Average Climate Data for Bonfield Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.1 °F31.9 °F2.16 in.
February19.2 °F36.2 °F1.88 in.
March28.6 °F48.0 °F2.41 in.
April38.9 °F61.2 °F3.74 in.
May50.3 °F72.4 °F4.55 in.
June60.3 °F81.5 °F4.68 in.
July63.7 °F84.5 °F4.38 in.
August61.6 °F82.9 °F3.83 in.
September53.8 °F77.6 °F3.22 in.
October42.2 °F64.6 °F3.25 in.
November31.5 °F49.7 °F2.6 in.
December21.9 °F37.1 °F2.15 in.
Annual40.7 °F60.6 °F38.85 in.

Climate Data for Bonfield Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
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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