National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Weather in the Central U.S.; Critical Fire Weather in the Southern Plains

Severe thunderstorms are expected to form today from northern Oklahoma into southern Minnesota. Very large hail and tornadoes will be the initial threats this afternoon, then transition into a wind threat tonight. Gusty winds, warm temperatures, and very dry conditions will create a Critical Risk of fire weather across portions of the southern Plains today. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

Lat: 47.54548°NLon: 122.3147°WElev: 20.0ft.

Overcast

54°F

12°C

Humidity 62%
Wind Speed SW 5 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 23 Apr 12:35 PM PDT
Extended Forecast for

Mercer Island WA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. Light northeast wind.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65. Calm wind becoming north northwest 5 to 9 mph in the afternoon.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. North northwest wind 5 to 10 mph becoming light northeast in the evening.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 63. Light and variable wind.
Tonight
Mostly clear, with a low around 44. Light northeast wind.
Friday
Sunny, with a high near 65. Calm wind becoming north northwest 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 40. North northwest wind 5 to 10 mph becoming light northeast in the evening.
Saturday
Sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 46.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.6°N 122.22°W (Elev. 3 ft)
Last Update:
11:28 am PDT Apr 23, 2026
Forecast Valid:
12pm PDT Apr 23, 2026-6pm PDT Apr 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation