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Isolated Severe Storms in the Midwest; Fire Weather Concerns in the Northern Plains; Record Heat in the West

Isolated severe storms are possible across parts of the Florida Peninsula and the Great Lakes to Lower Missouri Valley and south-central Plains late this afternoon and early evening. Elevated to critical fire weather concerns continue over much of the northern Great Plains. Above average temperatures persist across portions of the West today. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

81°F

27°C

Humidity 32%
Wind Speed NNW 3 MPH
Barometer 29.79 in (1008.81 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 May 03:15 PM PDT
Extended Forecast for

Mercer Island WA

  • Tonight

    Tonight: Rain likely after 11pm. Mostly cloudy, with a low around 52. South wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain, mainly before 1pm. High near 61. South southwest wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain then
    Rain Likely

  • Wednesday Night

    Wednesday Night: A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 50. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 61. South southwest wind 10 to 13 mph.

    High: 61 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 49. South southwest wind 9 to 13 mph.

    Low: 49 °F

    Chance Rain

  • Friday

    Friday: A 50 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain
    then Slight
    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 59.

    High: 59 °F

    Rain Likely

  • Saturday Night

    Saturday Night: A slight chance of rain before 11pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
Rain likely after 11pm. Mostly cloudy, with a low around 52. South wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly before 1pm. High near 61. South southwest wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 50. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Thursday
Mostly cloudy, with a high near 61. South southwest wind 10 to 13 mph.
Thursday Night
A 40 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 49. South southwest wind 9 to 13 mph.
Friday
A 50 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 57.
Friday Night
A 50 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 45.
Saturday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 59.
Saturday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 48.
Monday
Partly sunny, with a high near 66.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)
Last Update:
1:31 pm PDT May 12, 2026
Forecast Valid:
3pm PDT May 12, 2026-6pm PDT May 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation