# Frost dates for Plymouth, MN (55446)

**Do this (Safe, 2026-11-02):** Frost season started Sep 29. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 12 | Sep 29 | 140 |
| Median | Apr 29 | Oct 12 | 166 |
| Bold (9 in 10 years later) | Apr 15 | Oct 25 | 193 |

Frost = 32°F. Station: New Hope, MN, 4 mi away.

## Next nights (NWS overnight low)

- 2026-11-02: 57°F — Go (tonight)
- 2026-11-03: 49°F — Go
- 2026-11-04: 44°F — Go
- 2026-11-05: 38°F — Wait
- 2026-11-06: 36°F — Cover
- 2026-11-07: 39°F — Wait
- 2026-11-08: 39°F — Wait

Go above 40°F · Wait 37–40°F · Cover 36°F or less · Freeze 28°F or less.

Source: Frost dates: NOAA NCEI U.S. Climate Normals 1991–2020, station New Hope, MN (4 mi, 52 ft lower than you). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/mn/plymouth · JSON: https://frostdatecalculator.com/p/mn/plymouth?format=json