# Frost dates for San Jose, CA (95121)

**Do this (Safe, 2026-11-02):** 32 days until first frost (Dec 4). Tender plants OK outdoors.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Jan 23 | Dec 4 | 315 |
| Median | Jan 2 | Dec 25 | 357 |
| Bold (9 in 10 years later) | Dec 14 | Jan 14 | -334 |

Frost = 32°F. Station: San Jose, CA, 6 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 46°F — Go (tonight)
- 2026-11-02: 49°F — Go
- 2026-11-03: 47°F — Go
- 2026-11-04: 48°F — Go
- 2026-11-05: 48°F — Go
- 2026-11-06: 50°F — Go
- 2026-11-07: 52°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 San Jose, CA (6 mi, 92 ft lower than you). Not endorsed by NOAA. Nights: National Weather Service.

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