Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. 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 44%
Wind Speed N 0 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 12 Aug 10:30 PM PDT
Extended Forecast for

South Seattle WA

  • Tonight

    Tonight: Mostly clear, with a low around 64. North wind around 5 mph becoming calm  after midnight.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. South southwest wind 3 to 8 mph.

    High: 77 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 60. Light and variable wind becoming south southwest around 6 mph in the evening.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 72. South southwest wind 6 to 9 mph.

    High: 72 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain likely, mainly after 11pm.  Mostly cloudy, with a low around 61. South wind 6 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 61 °F

    Rain Likely

  • Friday

    Friday: Rain.  High near 69. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 69 °F

    Rain

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then rain after 11pm.  Low around 63. Chance of precipitation is 100%.

    Low: 63 °F

    Showers

  • Saturday

    Saturday: Rain.  Mostly cloudy, with a high near 72.

    High: 72 °F

    Rain

  • Saturday Night

    Saturday Night: A chance of rain, mainly before 11pm.  Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 64. North wind around 5 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 77. South southwest wind 3 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 60. Light and variable wind becoming south southwest around 6 mph in the evening.
Thursday
Mostly cloudy, with a high near 72. South southwest wind 6 to 9 mph.
Thursday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 61. South wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain. High near 69. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Low around 63. Chance of precipitation is 100%.
Saturday
Rain. Mostly cloudy, with a high near 72.
Saturday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 60.
Sunday
A slight chance of rain before 11am. Partly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 75.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
South Seattle WA
 47.55°N 122.3°W (Elev. 200 ft)
8:01 pm PDT Aug 12, 2025
10pm PDT Aug 12, 2025-6pm PDT Aug 19, 2025
 
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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