Frost dates in Mahnomen County, Minnesota
The average last spring frost in Mahnomen County falls May 7 to May 15 and the average first fall frost Sep 26 to Sep 28, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 3b to 4a. Places: Beaulieu, Bejou, Naytahwaush, Pine Bend, Twin Lakes. 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 |
|---|---|---|---|---|
| 56516 | Bejou | May 7 | Sep 28 | 4a |
| 56557 | Beaulieu | May 7 | Sep 28 | 4a |
| 56566 | Naytahwaush | May 7 | Sep 28 | 3b |
| 56589 | Twin Lakes | May 7 | Sep 28 | 4a |
| 56651 | Pine Bend | May 15 | Sep 26 | 3b |
Nearby counties
Becker County Clearwater County Norman County Polk County Red Lake County Hubbard County
All Minnesota counties · Download Minnesota frost dates (CSV)
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.