# Frost dates for Fairfield, CA (94533)

**Do this (Safe, 2026-11-02):** 27 days until first frost (Nov 29). Tender plants OK outdoors.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Feb 16 | Nov 29 | 286 |
| Median | Jan 15 | Dec 14 | 333 |
| Bold (9 in 10 years later) | Dec 22 | Jan 9 | -347 |

Frost = 32°F. Station: Fairfield, CA, 2 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 47°F — Go (tonight)
- 2026-11-02: 49°F — Go
- 2026-11-03: 48°F — Go
- 2026-11-04: 49°F — Go
- 2026-11-05: 49°F — Go
- 2026-11-06: 51°F — Go
- 2026-11-07: 51°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 Fairfield, CA (2 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/ca/fairfield · JSON: https://frostdatecalculator.com/p/ca/fairfield?format=json