Grassmere, WA Weather Forecast
Local 7-day forecast
Chance Light Rain then Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grassmere, WA in one place.
A chance of rain before 10am. Partly sunny, with a high near 68. Northwest wind 0 to 3 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Grassmere, 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: Sep 14, 2026 9:46 PM PDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Grassmere, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 9:46 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Grassmere
Thursday looks like the warmest upcoming period in Grassmere at 78 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Wednesday Night at about 0 to 7 mph NNE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:46 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
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 49. Northeast wind around 3 mph.
Sunny, with a high near 77. South southwest wind 0 to 6 mph.
Clear, with a low around 52. North northeast wind 0 to 7 mph.
Sunny, with a high near 78.
Mostly clear, with a low around 52.
Sunny, with a high near 75.
Partly cloudy, with a low around 53.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 52.
Sunny, with a high near 75.
Partly cloudy, with a low around 53.
A chance of rain after 11am. Mostly sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Chance Light Rain then Partly Sunny
|
68°F |
0 to 3 mph
NW
|
|
Tuesday Night
Sep 15
|
Mostly Clear
|
49°F |
3 mph
NE
|
|
Wednesday
Sep 16
|
Sunny
|
77°F |
0 to 6 mph
SSW
|
|
Wednesday Night
Sep 16
|
Clear
|
52°F |
0 to 7 mph
NNE
|
|
Thursday
Sep 17
|
Sunny
|
78°F |
0 to 6 mph
NW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
52°F |
0 to 6 mph
NE
|
|
Friday
Sep 18
|
Sunny
|
75°F |
0 to 6 mph
SE
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
53°F |
0 to 6 mph
ENE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
73°F |
0 to 5 mph
NE
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
52°F |
0 to 5 mph
NNE
|
|
Sunday
Sep 20
|
Sunny
|
75°F |
0 to 3 mph
SE
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
53°F |
0 to 3 mph
ENE
|
|
Monday
Sep 21
|
Chance Light Rain
|
72°F |
1 to 6 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grassmere.