Rainier, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rainier, a city in Thurston County, Washington.
Today
89°F
Sunny then Smoke
Smoke after noon. Sunny, with a high near 89. North northeast wind around 7 mph.
7-day forecast for Rainier
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny then Smoke | 7 mph NNE | 0% |
| Tonight | 58°F | Smoke | 1 to 6 mph NE | 0% |
| Wednesday | 94°F | Areas Of Smoke | 1 to 6 mph NNE | 0% |
| Wednesday Night | 59°F | Mostly Clear | 0 to 5 mph N | 0% |
| Thursday | 92°F | Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 58°F | Mostly Clear | 5 mph WSW | 0% |
| Friday | 89°F | Sunny | 2 to 6 mph WSW | 0% |
| Friday Night | 56°F | Mostly Clear | 1 to 6 mph WSW | 0% |
| Saturday | 83°F | Sunny | 1 to 8 mph WSW | 0% |
| Saturday Night | 53°F | Mostly Clear | 3 to 8 mph WSW | 0% |
| Sunday | 79°F | Mostly Sunny | 3 to 7 mph WSW | 0% |
| Sunday Night | 52°F | Partly Cloudy | 2 to 7 mph WSW | 0% |
| Monday | 78°F | Mostly Sunny | 2 to 6 mph WNW | 0% |
| Monday Night | 52°F | Partly Cloudy | 1 to 6 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Rainier (46.892, -122.687). Updated through the day.
Growing snapshot for Rainier
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
8b
More local growing data for Rainier: nearby ZIP 98576 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Olympia Ap, Wa (14.9 mi from Rainier). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.