Frost dates in Williams County, North Dakota
The average last spring frost in Williams County falls May 11 to May 21 and the average first fall frost Sep 17 to Sep 26, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 3b to 4a. Places: Alamo, Epping, Grenora, McGregor, Ray, Tioga. 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 |
|---|---|---|---|---|
| 58755 | McGregor | May 18 | Sep 20 | 3b |
| 58801 | Williston | May 13 | Sep 26 | 4a |
| 58830 | Alamo | May 18 | Sep 20 | 3b |
| 58843 | Epping | May 21 | Sep 21 | 4a |
| 58845 | Grenora | May 18 | Sep 21 | 3b |
| 58849 | Ray | May 11 | Sep 26 | 4a |
| 58852 | Tioga | May 11 | Sep 26 | 3b |
| 58853 | Trenton | May 13 | Sep 26 | 4a |
| 58856 | May 19 | Sep 17 | 4a |
Nearby counties
Divide County McKenzie County Burke County Mountrail County Dunn County Renville County
All North Dakota counties · Download North Dakota frost dates (CSV)
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