# Frost dates for Portland, OR (97212)

**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 21 | Nov 10 | 234 |
| Median | Feb 25 | Dec 1 | 279 |
| Bold (9 in 10 years later) | Jan 24 | Dec 27 | 337 |

Frost = 32°F. Station: Portland Kgw-tv, OR, 2 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 40°F — Wait (tonight)
- 2026-11-02: 46°F — Go
- 2026-11-03: 42°F — Go
- 2026-11-04: 48°F — Go
- 2026-11-05: 47°F — Go
- 2026-11-06: 45°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 Portland Kgw-tv, OR (2 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/or/portland · JSON: https://frostdatecalculator.com/p/or/portland?format=json