Wilton Iowa Climate Data

Monthly Average Climate Data for Wilton Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.0 °F30.2 °F1.37 in.
February17.5 °F34.7 °F1.64 in.
March28.4 °F47.6 °F2.4 in.
April39.5 °F61.2 °F3.68 in.
May51.4 °F72.1 °F4.81 in.
June61.3 °F81.4 °F5.13 in.
July64.8 °F84.5 °F4.26 in.
August62.5 °F82.7 °F4.07 in.
September54.2 °F76.8 °F3.59 in.
October42.3 °F63.8 °F2.92 in.
November30.5 °F48.8 °F2.2 in.
December20.0 °F35.5 °F1.84 in.
Annual40.5 °F59.9 °F37.91 in.

Climate Data for Wilton Iowa

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 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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