Winfield Iowa Climate Data

Monthly Average Climate Data for Winfield Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.9 °F31.4 °F1.41 in.
February18.6 °F36.1 °F1.71 in.
March29.0 °F49.0 °F2.42 in.
April40.1 °F62.2 °F3.74 in.
May51.9 °F72.7 °F5.12 in.
June61.8 °F81.9 °F4.93 in.
July65.2 °F85.3 °F4.1 in.
August62.9 °F83.6 °F4.07 in.
September54.1 °F77.5 °F3.55 in.
October42.5 °F64.7 °F2.88 in.
November31.0 °F49.4 °F2.27 in.
December20.8 °F36.7 °F1.77 in.
Annual41.1 °F60.9 °F37.97 in.

Climate Data for Winfield Iowa

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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation