Seymour Iowa Climate Data

Monthly Average Climate Data for Seymour Iowa

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.3 °C-0.2 °C28.7 mm
February-8.1 °C2.6 °C37.85 mm
March-2.3 °C9.7 °C57.91 mm
April3.7 °C16.3 °C100.58 mm
May10.2 °C21.7 °C138.68 mm
June15.7 °C26.9 °C136.91 mm
July18.1 °C29.4 °C117.09 mm
August16.7 °C28.5 °C109.22 mm
September11.7 °C24.8 °C98.55 mm
October5 °C17.7 °C75.18 mm
November-1.8 °C9.5 °C53.34 mm
December-7.2 °C2.8 °C39.37 mm
Annual4.3 °C15.8 °C993.38 mm

Climate Data for Seymour 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 : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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