# Frost dates for Pleasanton, CA (94566)

**Do this (Safe, 2026-11-02):** 14 days until first frost (Nov 16). Protect tender plants.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Mar 13 | Nov 16 | 248 |
| Median | Feb 15 | Dec 2 | 290 |
| Bold (9 in 10 years later) | Jan 12 | Dec 28 | 350 |

Frost = 32°F. Station: Livermore, CA, 4 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 45°F — Go (tonight)
- 2026-11-02: 48°F — Go
- 2026-11-03: 46°F — Go
- 2026-11-04: 48°F — Go
- 2026-11-05: 48°F — Go
- 2026-11-06: 50°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 Livermore, CA (4 mi, 69 ft higher than you). Not endorsed by NOAA. Nights: National Weather Service.

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