Sumner, WA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, WA in one place.
Mostly sunny, with a high near 66.
Local Weather Overview
This forecast page for Sumner, 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: Apr 19, 2026 8:55 PM PDT.
The active forecast window currently covers Apr 23 to Apr 26, 2026 for Sumner, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 26, 2026
- Latest sync
- Apr 19, 2026 8:55 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Friday looks like the warmest upcoming period in Sumner at 70 degrees F.
Thursday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Thursday at about 1 to 5 mph WNW.
The forecast from Apr 23 through Apr 26 stays mostly dry.
Forecast Details
- Last updated
- Apr 19, 2026 8:55 PM PDT
- Coverage
- 4 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 43.
Sunny, with a high near 70.
Mostly clear, with a low around 45.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Mostly Sunny
|
66°F |
1 to 5 mph
WNW
|
|
Thursday Night
Apr 23
|
Mostly Clear
|
43°F |
1 to 5 mph
ENE
|
|
Friday
Apr 24
|
Sunny
|
70°F |
1 to 5 mph
NNE
|
|
Friday Night
Apr 24
|
Mostly Clear
|
45°F |
1 to 5 mph
ENE
|
|
Saturday
Apr 25
|
Mostly Sunny
|
70°F |
1 to 5 mph
NE
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
45°F |
1 to 5 mph
NE
|
|
Sunday
Apr 26
|
Mostly Sunny
|
69°F |
1 to 5 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.
