Frost dates in McLean County, North Dakota
The average last spring frost in McLean County falls May 10 to May 16 and the average first fall frost Sep 26 to Oct 3, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 4a. Places: Benedict, Coleharbor, Garrison, Kief, Max, Mercer. 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 |
|---|---|---|---|---|
| 58531 | Coleharbor | May 12 | Oct 3 | 4a |
| 58540 | Garrison | May 14 | Sep 26 | 4a |
| 58559 | Mercer | May 14 | Sep 26 | 4a |
| 58565 | Riverdale | May 12 | Oct 3 | 4a |
| 58575 | Turtle Lake | May 14 | Sep 26 | 4a |
| 58576 | Underwood | May 10 | Sep 29 | 4a |
| 58577 | Washburn | May 12 | Sep 30 | 4a |
| 58716 | Benedict | May 10 | Sep 28 | 4a |
| 58723 | Kief | May 16 | Sep 28 | 4a |
| 58759 | Max | May 10 | Sep 28 | 4a |
| 58775 | White Shield | May 14 | Sep 26 | 4a |
| 58778 | Ruso | May 16 | Sep 28 | 4a |
| 58779 | Ryder | May 14 | Sep 26 | 4a |
Nearby counties
Mercer County Oliver County Sheridan County McHenry County Ward County Burleigh County
All North Dakota counties · Download North Dakota frost dates (CSV)
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