King County, WA Weather Forecast
County weather hub
Light Rain
Compare major city weather across King County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain. Mostly cloudy, with a high near 55. West southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
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
- Apr 11 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 12:37 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in King County
Saturday looks like the warmest upcoming period in King County at 55 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 9 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 12:37 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
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain likely. Mostly cloudy, with a high near 49.
A chance of rain. Mostly cloudy, with a low around 44.
A chance of rain. Mostly cloudy, with a high near 49.
A chance of rain. Mostly cloudy, with a low around 42.
Rain likely. Mostly cloudy, with a high near 48.
Rain. Mostly cloudy, with a low around 41.
Rain. Mostly cloudy, with a high near 48.
A chance of rain. Mostly cloudy, with a low around 37.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Light Rain
|
55°F |
6 mph
WSW
|
|
Saturday Night
Apr 11
|
Chance Light Rain
|
45°F |
6 mph
WSW
|
|
Sunday
Apr 12
|
Light Rain Likely
|
49°F |
3 to 7 mph
WSW
|
|
Sunday Night
Apr 12
|
Chance Light Rain
|
44°F |
6 mph
SW
|
|
Monday
Apr 13
|
Chance Light Rain
|
49°F |
8 mph
SW
|
|
Monday Night
Apr 13
|
Chance Light Rain
|
42°F |
7 mph
SSW
|
|
Tuesday
Apr 14
|
Light Rain Likely
|
48°F |
6 to 9 mph
SSW
|
|
Tuesday Night
Apr 14
|
Rain
|
41°F |
9 mph
SSW
|
|
Wednesday
Apr 15
|
Rain
|
48°F |
9 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Light Rain
|
37°F |
5 to 8 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.
