King County Weather Forecast
King County weather: 65°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Tomorrow in King County - Saturday, October 3
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
Is today a good day to visit?
Activity scores from 0 to 10 based on temperature, rain, wind, sun and visibility.
What to pack, what to skip
- Layers - the daily swing is 57°F, so mornings feel nothing like afternoons
- If your dates are flexible, avoid January, November and December - historically the least comfortable months here.
See the King County forecast by time range
King County weather - more answers
Explore King County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is King County?
King County is a county in Washington. Its coordinates are 47.6062, -122.3321. It lies in North America.
What is the weather like in King County right now?
It is currently 65°F (19°C) with overcast. Humidity is 71% and wind is 4 mph.
When is the best time to visit King County?
June, July and August offer the most comfortable conditions in King County, which has a temperate climate. January, November and December are usually the hardest months for outdoor plans.
What time zone is King County in?
King County observes America/Los_Angeles (UTC-07:00). The local time is 7:56 PM.
How many people live in King County?
King County has a population of approximately 2.3 million.
What is the nearest airport to King County?
The closest airports are Seattle-Tacoma International Airport (SEA), 11 mi away, Vancouver International Airport (YVR), 117 mi away and Portland International Airport (PDX), 140 mi away.
What are the top things to do in King County?
Popular options include Space Needle, Deception Pass State Park, Mount Rainier National Park, Mount Rainier, Olympic National Park and North Cascades National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 2, 2026 at 7:56 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
