Seymour Iowa Climate Data

Monthly Average Climate Data for Seymour Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.5 °F31.7 °F1.13 in.
February17.4 °F36.6 °F1.49 in.
March27.9 °F49.4 °F2.28 in.
April38.7 °F61.3 °F3.96 in.
May50.4 °F71.0 °F5.46 in.
June60.2 °F80.5 °F5.39 in.
July64.5 °F84.9 °F4.61 in.
August62.0 °F83.3 °F4.3 in.
September53.1 °F76.6 °F3.88 in.
October41.0 °F63.9 °F2.96 in.
November28.8 °F49.1 °F2.1 in.
December19.1 °F37.0 °F1.55 in.
Annual39.7 °F60.4 °F39.11 in.

Climate Data for Seymour Iowa

Average First Frost DateOct. 11 - Oct. 20
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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