Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

46°F

8°C

Humidity 75%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 18 Apr 03:20 AM PDT
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 72. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 72 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain, mainly after 11am.  Mostly cloudy, with a high near 67.

    High: 67 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. Calm wind.
Saturday
Mostly sunny, with a high near 69. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 48. Light and variable wind.
Sunday
Mostly cloudy, with a high near 72. Calm wind becoming north northwest around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 51. North northwest wind around 6 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
A chance of rain, mainly after 11am. Mostly cloudy, with a high near 67.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 51.
Wednesday
A chance of rain. Cloudy, with a high near 58.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 48.
Thursday
Mostly cloudy, with a high near 62.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 67.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.6°N 122.22°W (Elev. 3 ft)
11:26 pm PDT Apr 17, 2026
3am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database