Rainier, WA Weather & Growing Conditions
Today
60°F
Partly Sunny
Partly sunny. High near 60, with temperatures falling to around 53 in the afternoon. North northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Partly Sunny | 2 mph NNE | 4% |
| Tonight | 39°F | Partly Cloudy | 1 mph S | 4% |
| Wednesday | 61°F | Partly Sunny then Chance Light Rain | 1 to 5 mph S | 42% |
| Wednesday Night | 47°F | Light Rain | 5 to 14 mph S | 96% |
| Thursday | 59°F | Slight Chance Light Rain then Partly Sunny | 3 to 8 mph SSW | 22% |
| Thursday Night | 46°F | Light Rain | 3 to 12 mph S | 75% |
| Friday | 58°F | Light Rain | 5 to 16 mph S | 75% |
| Friday Night | 46°F | Chance Light Rain | 5 mph S | 40% |
| Saturday | 65°F | Mostly Cloudy then Chance Light Rain | 3 mph S | 30% |
| Saturday Night | 49°F | Light Rain Likely | 2 to 20 mph S | 72% |
| Sunday | 58°F | Light Rain Likely | 1 to 16 mph SSW | 70% |
| Sunday Night | 43°F | Slight Chance Light Rain | 2 mph SSE | 23% |
| Monday | 59°F | Chance Light Rain | 5 mph SSE | 51% |
| Monday Night | 47°F | Light Rain Likely | 5 to 17 mph S | 67% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rainier, WA
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
8b
Explore more for Rainier, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Olympia Ap, Wa (14.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.