Fire Weather Concerns; Record Warmth Spreads

The Plains to the mid-Mississippi Valley continue with warm and dry conditions. Any fires that initiate could spread quickly. The warm temperatures will expand across the Southern Plains into the Southwest where numerous records are expected through the weekend. Meanwhile, a cold front will move southward across the northern Plains and Great Lakes region where some snow will develop this weekend. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Overcast

43°F

6°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 28 Feb 02:00 AM PST
Extended Forecast for

Mercer Island WA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52. North wind 5 to 10 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. North northeast wind 3 to 6 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 56. Calm wind becoming north around 6 mph in the morning.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 10 percent chance of rain after 4am.  Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: Rain likely, mainly after 10am.  Cloudy, with a high near 54.

    High: 54 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain.  Cloudy, with a low around 47.

    Low: 47 °F

    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 44. Calm wind.
Saturday
Mostly sunny, with a high near 52. North wind 5 to 10 mph.
Saturday Night
Mostly cloudy, with a low around 39. North northeast wind 3 to 6 mph.
Sunday
Sunny, with a high near 56. Calm wind becoming north around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
Mostly sunny, with a high near 57.
Monday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 43.
Tuesday
Rain likely, mainly after 10am. Cloudy, with a high near 54.
Tuesday Night
Rain. Cloudy, with a low around 47.
Wednesday
Rain. Cloudy, with a high near 53.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 44.
Thursday
Rain likely. Mostly cloudy, with a high near 51.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 45.
Friday
Rain likely. Cloudy, with a high near 53.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)
1:26 am PST Feb 28, 2026
2am PST Feb 28, 2026-6pm PST Mar 6, 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