# Frost dates for Warren, MI (48015)

**Do this (Safe, 2026-11-02):** Frost season started Oct 17. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | May 6 | Oct 17 | 164 |
| Median | Apr 21 | Oct 31 | 193 |
| Bold (9 in 10 years later) | Apr 7 | Nov 11 | 218 |

Frost = 32°F. Station: Detroit City AP, MI, 6 mi away.

## Next nights (NWS overnight low)

- 2026-11-02: 57°F — Go (tonight)
- 2026-11-03: 62°F — Go
- 2026-11-04: 54°F — Go
- 2026-11-05: 48°F — Go
- 2026-11-06: 43°F — Go
- 2026-11-07: 38°F — Wait
- 2026-11-08: 40°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 Detroit City AP, MI (6 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/mi/warren · JSON: https://frostdatecalculator.com/p/mi/warren?format=json