# Frost dates for Porterville, CA (93257)

**Do this (Safe, 2026-11-02):** 24 days until first frost (Nov 26). Tender plants OK outdoors.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Feb 22 | Nov 26 | 277 |
| Median | Jan 20 | Dec 13 | 327 |
| Bold (9 in 10 years later) | Dec 25 | Jan 6 | -353 |

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

## Next nights (NWS overnight low)

- 2026-11-01: 48°F — Go (tonight)
- 2026-11-02: 51°F — Go
- 2026-11-03: 49°F — Go
- 2026-11-04: 49°F — Go
- 2026-11-05: 50°F — Go
- 2026-11-06: 51°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 Porterville, CA (1 mi, 102 ft lower than you). Not endorsed by NOAA. Nights: National Weather Service.

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