Rainier, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rainier, a city in Thurston County, Washington.
Today
59°F
Mostly Sunny
Mostly sunny. High near 59, with temperatures falling to around 54 in the afternoon. North wind around 2 mph.
7-day forecast for Rainier
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Mostly Sunny | 2 mph N | 5% |
| Tonight | 35°F | Mostly Clear then Patchy Fog | 0 mph | 5% |
| Wednesday | 60°F | Patchy Fog then Light Rain | 0 to 3 mph SSW | 97% |
| Wednesday Night | 46°F | Light Rain | 3 to 13 mph S | 97% |
| Thursday | 58°F | Chance Light Rain then Partly Sunny | 3 to 8 mph SSW | 25% |
| Thursday Night | 44°F | Light Rain | 3 to 10 mph S | 76% |
| Friday | 57°F | Light Rain | 6 to 16 mph S | 76% |
| Friday Night | 43°F | Chance Light Rain | 1 to 6 mph S | 46% |
| Saturday | 62°F | Chance Light Rain | 2 mph S | 34% |
| Saturday Night | 48°F | Light Rain Likely | 0 to 15 mph S | 71% |
| Sunday | 58°F | Light Rain Likely | 2 to 15 mph SSW | 71% |
| Sunday Night | 41°F | Slight Chance Light Rain | 2 mph S | 21% |
| Monday | 58°F | Chance Light Rain | 1 to 6 mph SSE | 52% |
| Monday Night | 45°F | Light Rain Likely | 6 to 15 mph S | 63% |
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 Nov 3, 2026.