Rainier, WA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Rainier, WA in one place.
Mostly sunny, with a high near 73. North northeast wind around 5 mph.
Local Weather Overview
This forecast page for Rainier, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 13, 2026 8:51 PM PDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Rainier, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 8:51 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Rainier
Friday looks like the warmest upcoming period in Rainier at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Monday at about 6 to 13 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 8:51 PM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KLGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 48. North wind around 2 mph.
Mostly sunny, with a high near 76.
A chance of rain after 11pm. Mostly cloudy, with a low around 52.
A chance of rain before 11am. Partly sunny, with a high near 63.
Partly cloudy, with a low around 40.
A chance of rain after 5pm. Partly sunny, with a high near 61.
Rain likely. Mostly cloudy, with a low around 45.
Rain likely. Mostly cloudy, with a high near 56.
A chance of rain. Mostly cloudy, with a low around 42.
A slight chance of rain before 5pm. Partly sunny, with a high near 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Mostly Sunny
|
73°F |
5 mph
NNE
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
48°F |
2 mph
N
|
|
Friday
Oct 16
|
Mostly Sunny
|
76°F |
1 mph
NW
|
|
Friday Night
Oct 16
|
Chance Light Rain
|
52°F |
0 to 8 mph
SW
|
|
Saturday
Oct 17
|
Chance Light Rain then Partly Sunny
|
63°F |
5 to 8 mph
SW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
40°F |
1 to 5 mph
SSW
|
|
Sunday
Oct 18
|
Partly Sunny then Chance Light Rain
|
61°F |
2 mph
ENE
|
|
Sunday Night
Oct 18
|
Light Rain Likely
|
45°F |
1 to 9 mph
S
|
|
Monday
Oct 19
|
Light Rain Likely
|
56°F |
6 to 13 mph
S
|
|
Monday Night
Oct 19
|
Chance Light Rain
|
42°F |
5 to 8 mph
S
|
|
Tuesday
Oct 20
|
Slight Chance Light Rain
|
58°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Rainier.
