When is the first freeze in Des Moines, IA?
NOAA's 1991-2020 climate normals for DES MOINES INTL AP, IA US put the middle date for the first fall freeze (32°F or colder) at about Oct 20. The middle date for the first hard freeze (28°F or colder) is about Oct 30.
| First fall freeze (32°F), middle date | Oct 20 |
|---|---|
| First hard freeze (28°F), middle date | Oct 30 |
| Last spring freeze (32°F), middle date | Apr 18 |
| Chance of a 32°F night in a year | 100% |
| Weather station | DES MOINES INTL AP, IA US (USW00014933) |
The middle date is NOAA's 50% date. In about half of years the first freeze comes sooner, and in half it comes later. One station can differ from nearby areas, mostly low or rural spots. Dates change each year, so check the latest National Weather Service forecast.
For HVAC and plumbing shops in Des Moines
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NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020, annual/seasonal normals, station USW00014933: fields ANN-TMIN-PRBFST-T32FP50, ANN-TMIN-PRBFST-T28FP50, ANN-TMIN-PRBLST-T32FP50, ANN-TMIN-PRBOCC-LSTH032. https://www.ncei.noaa.gov/data/normals-annualseasonal/1991-2020/access/USW00014933.csv. ForecastBooked is not affiliated with or endorsed by NOAA.