# Frost dates for Richland, WA (99352)

**Do this (Safe, 2026-11-02):** Frost season started Oct 10. Keep covers ready for cold nights.

| Risk | Last spring frost | First fall frost | Frost-free days |
|---|---|---|---|
| Safe (1 in 10 years later) | Apr 24 | Oct 10 | 169 |
| Median | Apr 6 | Oct 24 | 201 |
| Bold (9 in 10 years later) | Mar 22 | Nov 8 | 231 |

Frost = 32°F. Station: Richland, WA, 2 mi away.

## Next nights (NWS overnight low)

- 2026-11-01: 35°F — Cover (tonight)
- 2026-11-02: 40°F — Wait
- 2026-11-03: 35°F — Cover
- 2026-11-04: 40°F — Wait
- 2026-11-05: 40°F — Wait
- 2026-11-06: 39°F — Wait
- 2026-11-07: 39°F — Wait

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 Richland, WA (2 mi, about your height). Not endorsed by NOAA. Nights: National Weather Service.

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