Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Boeing Field - King County International Airport (KBFI)

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

Clear

54°F

12°C

Humidity 81%
Wind Speed NW 3 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 May 07:00 AM PDT
Extended Forecast for

South Seattle WA

  • Today

    Today: Sunny, with a high near 74. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. North wind around 5 mph becoming calm  in the evening.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 67.

    High: 67 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

  • Memorial Day

    Memorial Day: Rain likely.  Mostly cloudy, with a high near 60.

    High: 60 °F

    Rain Likely

Detailed Forecast

Today
Sunny, with a high near 74. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 54. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 75. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly cloudy, with a high near 67.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 50.
Memorial Day
Rain likely. Mostly cloudy, with a high near 60.
Monday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 48.
Tuesday
A slight chance of rain. Partly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 69.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
South Seattle WA
 47.55°N 122.27°W (Elev. 200 ft)
11:26 pm PDT May 20, 2026
7am PDT May 21, 2026-6pm PDT May 27, 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