Benson Illinois Climate Data

Monthly Average Climate Data for Benson Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.8 °F32.5 °F2.14 in.
February19.2 °F37.3 °F1.91 in.
March28.8 °F49.4 °F2.63 in.
April39.6 °F62.7 °F3.66 in.
May51.3 °F73.8 °F4.55 in.
June61.0 °F82.7 °F4.13 in.
July64.2 °F85.7 °F3.84 in.
August62.1 °F83.8 °F3.52 in.
September54.1 °F78.7 °F3.56 in.
October42.6 °F65.7 °F3.06 in.
November31.4 °F50.4 °F2.62 in.
December21.6 °F37.7 °F2.09 in.
Annual41 °F61.7 °F37.71 in.

Climate Data for Benson Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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