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

Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

69°F

21°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Jul 02:53 AM PDT
Extended Forecast for

Mercer Island WA

Heat Advisory July 15, 12:00pm until July 16, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 65. Northeast wind around 6 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 76. Light and variable wind becoming north northwest around 6 mph in the afternoon.

    High: 76 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Calm wind becoming north northwest 5 to 8 mph in the morning.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63. Northeast wind 3 to 8 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 65. Northeast wind around 6 mph.
Monday
Increasing clouds, with a high near 76. Light and variable wind becoming north northwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 59. North northwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85. Calm wind becoming north northwest 5 to 8 mph in the morning.
Tuesday Night
Clear, with a low around 63. Northeast wind 3 to 8 mph.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 86.
Thursday Night
Clear, with a low around 60.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Partly sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mercer Island WA
 47.58°N 122.22°W (Elev. 118 ft)
Last Update:
2:57 am PDT Jul 14, 2025
Forecast Valid:
3am PDT Jul 14, 2025-6pm PDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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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