Benton Illinois Climate Data

Monthly Average Climate Data for Benton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.6 °F40.5 °F3.2 in.
February26.7 °F45.4 °F2.89 in.
March35.4 °F55.5 °F3.99 in.
April45.5 °F67.4 °F5.26 in.
May55.9 °F76.2 °F5.19 in.
June64.4 °F84.9 °F4.72 in.
July67.9 °F87.8 °F3.89 in.
August65.6 °F86.9 °F2.98 in.
September57.6 °F80.8 °F3.11 in.
October45.9 °F69.4 °F3.39 in.
November35.8 °F55.8 °F4.14 in.
December27.7 °F44.6 °F3.32 in.
Annual46 °F66.3 °F46.08 in.

Climate Data for Benton Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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