Mossyrock, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mossyrock, a city in Lewis County, Washington.
Today
89°F
Smoke
Smoke. Sunny, with a high near 89. North wind around 3 mph.
7-day forecast for Mossyrock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Smoke | 3 mph N | 0% |
| Tonight | 57°F | Smoke | 3 mph ENE | 0% |
| Wednesday | 94°F | Areas Of Smoke | 2 mph N | 0% |
| Wednesday Night | 59°F | Mostly Clear | 2 mph N | 0% |
| Thursday | 92°F | Sunny | 2 mph NW | 0% |
| Thursday Night | 57°F | Mostly Clear | 2 mph NNW | 0% |
| Friday | 87°F | Sunny | 0 to 3 mph WNW | 0% |
| Friday Night | 54°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Saturday | 82°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 51°F | Partly Cloudy | 0 to 5 mph NW | 0% |
| Sunday | 76°F | Mostly Sunny | 0 to 3 mph NW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 3 mph NW | 0% |
| Monday | 76°F | Mostly Sunny | 0 to 3 mph NW | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 to 3 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Mossyrock (46.530, -122.489). Updated through the day.
Growing snapshot for Mossyrock
Last spring frost
Apr 7
First fall frost
Nov 13
Growing season
215 days
Hardiness zone
8b
More local growing data for Mossyrock: nearby ZIP 98585 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Ashford
Centralia
Chehalis
Fords Prairie
Grand Mound
Morton
Napavine
Onalaska
Packwood
Pe Ell
Toledo
Vader
Winlock
Climate data from the nearest NOAA station, Mayfield Pwr Plt, Wa (8.6 mi from Mossyrock). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.