Des Moines Iowa Climate Data

Monthly Average Climate Data for Des Moines Iowa

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.8 °F30.4 °F0.97 in.
February16.7 °F35.1 °F1.19 in.
March27.7 °F48.0 °F2.11 in.
April39.1 °F61.7 °F3.72 in.
May51.1 °F72.0 °F4.9 in.
June61.4 °F81.7 °F5.26 in.
July65.2 °F85.6 °F4.22 in.
August62.7 °F83.8 °F4.11 in.
September53.9 °F77.3 °F3.3 in.
October41.5 °F63.9 °F2.61 in.
November29.3 °F48.7 °F1.77 in.
December18.6 °F35.6 °F1.33 in.
Annual40 °F60.3 °F35.49 in.

Climate Data for Des Moines 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