Frost dates in Cass County, Iowa
The average last spring frost in Cass County falls Apr 23 to Apr 30 and the average first fall frost Oct 2 to Oct 14, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5a to 5b. Places: Anita, Atlantic, Cumberland, Griswold, Lewis, Marne. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 50020 | Anita | Apr 30 | Oct 2 | 5b |
| 50022 | Atlantic | Apr 30 | Oct 2 | 5a |
| 50274 | Wiota | Apr 30 | Oct 2 | 5b |
| 50843 | Cumberland | Apr 30 | Oct 2 | 5b |
| 50853 | Massena | Apr 27 | Oct 12 | 5b |
| 51535 | Griswold | Apr 23 | Oct 14 | 5b |
| 51544 | Lewis | Apr 30 | Oct 2 | 5b |
| 51552 | Marne | Apr 30 | Oct 2 | 5b |
Nearby counties
Montgomery County Audubon County Adair County Adams County Shelby County Pottawattamie County
All Iowa counties · Download Iowa frost dates (CSV)
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