Benton Iowa Climate Data

Monthly Average Climate Data for Benton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F32.4 °F0.83 in.
February17.8 °F37.5 °F1.28 in.
March28.5 °F50.1 °F2.21 in.
April39.1 °F62.3 °F3.74 in.
May50.9 °F72.1 °F5.52 in.
June60.9 °F81.3 °F5.31 in.
July65.0 °F85.7 °F4.53 in.
August62.6 °F84.1 °F4.32 in.
September53.5 °F77.1 °F3.69 in.
October41.1 °F64.9 °F3.03 in.
November29.3 °F49.7 °F2.07 in.
December19.0 °F37.3 °F1.39 in.
Annual40.1 °F61.2 °F37.92 in.

Climate Data for Benton Iowa

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
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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