# Frost dates for Santa Rosa, CA (95405)

**Do this (Safe, 2026-11-02):** 8 days until first frost (Nov 10). Protect tender plants.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Mar 29 | Nov 10 | 226 |
| Median | Feb 25 | Dec 1 | 279 |
| Bold (9 in 10 years later) | Jan 21 | Dec 24 | 337 |

Frost = 32°F. Station: Santa Rosa, CA, 1 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 44°F — Go (tonight)
- 2026-11-02: 46°F — Go
- 2026-11-03: 45°F — Go
- 2026-11-04: 46°F — Go
- 2026-11-05: 45°F — Go
- 2026-11-06: 47°F — Go
- 2026-11-07: 47°F — Go

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 Santa Rosa, CA (1 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/ca/santa-rosa · JSON: https://frostdatecalculator.com/p/ca/santa-rosa?format=json