King County, WA Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across King County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny. High near 57, with temperatures falling to around 55 in the afternoon. South wind 0 to 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for King County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 31 of 31 mapped cities in King County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 5:19 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in King County
Friday looks like the warmest upcoming period in King County at 70 degrees F.
Saturday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Thursday Night at about 3 to 13 mph E.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 5:19 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
A slight chance of rain after 5am. Mostly cloudy, with a low around 48. South southeast wind 1 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain before 11am. Partly sunny, with a high near 60. Southwest wind 1 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 48.
Sunny, with a high near 69.
Mostly clear, with a low around 54.
Mostly sunny, with a high near 70.
Rain likely after 11pm. Mostly cloudy, with a low around 52.
Rain likely. Mostly cloudy, with a high near 56.
A slight chance of rain before 5am. Mostly cloudy, with a low around 45.
A chance of rain after 5pm. Partly sunny, with a high near 56.
Rain likely. Mostly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Partly Sunny
|
57°F |
0 to 3 mph
S
|
|
Tuesday Night
Oct 13
|
Mostly Cloudy then Slight Chance Light Rain
|
48°F |
1 to 5 mph
SSE
|
|
Wednesday
Oct 14
|
Slight Chance Light Rain then Partly Sunny
|
60°F |
1 to 5 mph
SW
|
|
Wednesday Night
Oct 14
|
Partly Cloudy
|
48°F |
1 to 7 mph
ENE
|
|
Thursday
Oct 15
|
Sunny
|
69°F |
2 to 8 mph
E
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
54°F |
3 to 13 mph
E
|
|
Friday
Oct 16
|
Mostly Sunny
|
70°F |
1 to 12 mph
S
|
|
Friday Night
Oct 16
|
Light Rain Likely
|
52°F |
1 to 5 mph
S
|
|
Saturday
Oct 17
|
Light Rain Likely
|
56°F |
5 mph
SW
|
|
Saturday Night
Oct 17
|
Slight Chance Light Rain
|
45°F |
3 mph
S
|
|
Sunday
Oct 18
|
Partly Sunny then Chance Light Rain
|
56°F |
0 to 3 mph
SSW
|
|
Sunday Night
Oct 18
|
Light Rain Likely
|
45°F |
3 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across King County.
Coverage
Forecast coverage currently spans 31 of 31 mapped cities in King County.
Largest mapped city population in this region: 769,714.
