Sumner, WA Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sumner, WA in one place.
Patchy fog before 7am. Sunny, with a high near 76. North wind 0 to 5 mph.
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: Sep 14, 2026 10:53 PM PDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Sumner, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 10:53 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumner
Thursday looks like the warmest upcoming period in Sumner at 78 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph N.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Sep 14, 2026 10:53 PM PDT
- Coverage
- 6 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 51. North wind 0 to 5 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 74.
Mostly clear, with a low around 51.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 52.
A slight chance of rain after 5pm. Mostly sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Patchy Fog then Sunny
|
76°F |
0 to 5 mph
N
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
51°F |
0 to 5 mph
N
|
|
Thursday
Sep 17
|
Sunny
|
78°F |
2 mph
N
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
52°F |
2 mph
N
|
|
Friday
Sep 18
|
Sunny
|
75°F |
3 mph
SW
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
53°F |
2 mph
W
|
|
Saturday
Sep 19
|
Mostly Sunny
|
74°F |
2 mph
NNW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
51°F |
2 mph
N
|
|
Sunday
Sep 20
|
Mostly Sunny
|
74°F |
2 mph
N
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
52°F |
2 mph
N
|
|
Monday
Sep 21
|
Mostly Sunny then Slight Chance Light Rain
|
72°F |
0 to 5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumner.
