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Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

73°F

23°C

Humidity 38%
Wind Speed N 4 MPH
Barometer 29.75 in (1007.45 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Apr 04:20 PM PDT
Extended Forecast for

Mercer Island WA

  • Tonight

    Tonight: A slight chance of rain between 8pm and 1am. Partly cloudy, with a low around 51. South southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 51 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 50 percent chance of rain. Mostly cloudy, with a high near 62. Calm wind becoming west around 6 mph in the afternoon.

    High: 62 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 11pm. Cloudy, with a low around 50. South wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, mainly before 11am. Cloudy, with a high near 56. South southwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. South southwest wind around 6 mph.

    Low: 48 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain between 8pm and 1am. Partly cloudy, with a low around 51. South southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 62. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
Rain likely, mainly after 11pm. Cloudy, with a low around 50. South wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain likely, mainly before 11am. Cloudy, with a high near 56. South southwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 48. South southwest wind around 6 mph.
Thursday
Partly sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.19°W (Elev. 135 ft)
Last Update:
11:26 am PDT Apr 20, 2026
Forecast Valid:
4pm PDT Apr 20, 2026-6pm PDT Apr 27, 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