# Frost dates for Kennewick, WA (99337)

**Do this (Safe, 2026-11-02):** Frost season started Oct 18. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Apr 10 | Oct 18 | 191 |
| Median | Mar 28 | Oct 30 | 216 |
| Bold (9 in 10 years later) | Mar 9 | Nov 15 | 251 |

Frost = 32°F. Station: Kennewick, WA, 4 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 38°F — Wait (tonight)
- 2026-11-02: 41°F — Go
- 2026-11-03: 37°F — Wait
- 2026-11-04: 43°F — Go
- 2026-11-05: 42°F — Go
- 2026-11-06: 41°F — Go
- 2026-11-07: 41°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 Kennewick, WA (4 mi, 272 ft lower than you). Not endorsed by NOAA. Nights: National Weather Service.

Page: https://frostdatecalculator.com/p/wa/kennewick · JSON: https://frostdatecalculator.com/p/wa/kennewick?format=json