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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

Lat: 47.68528°NLon: 122.25111°WElev: 29.0ft.

NA

52°F

11°C

Humidity 97%
Wind Speed S 8 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 51°F (11°C)
Visibility NA
Last update 20 Mar 07:30 AM PDT
Extended Forecast for

Mountlake Terrace WA

Flood Watch March 20, 08:21am until March 20, 05:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 20, 08:21am until March 20, 05:00pm

    NOW until 5:00pm Fri

    Flood Watch

  • Today

    High: 55 °F

    Rain

  • Tonight

    Tonight: Rain likely before 2am, then a chance of showers after 3am. Mostly cloudy, with a low around 39. North northwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain Likely
    then Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 48. North northwest wind around 5 mph.

    High: 48 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 37. Light and variable wind becoming south southeast around 6 mph in the evening.

    Low: 37 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 50. South southeast wind around 6 mph becoming west southwest in the afternoon.

    High: 50 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of rain after 11pm. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Today
Rain, mainly before 2pm. High near 55. South wind 10 to 13 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely before 2am, then a chance of showers after 3am. Mostly cloudy, with a low around 39. North northwest wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 40 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 48. North northwest wind around 5 mph.
Saturday Night
A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 37. Light and variable wind becoming south southeast around 6 mph in the evening.
Sunday
A 40 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 50. South southeast wind around 6 mph becoming west southwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Mostly cloudy, with a high near 51.
Monday Night
A chance of rain after 11pm. Mostly cloudy, with a low around 41.
Tuesday
Rain. Cloudy, with a high near 51.
Tuesday Night
Rain. Cloudy, with a low around 39.
Wednesday
Rain. Mostly cloudy, with a high near 49.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 34.
Thursday
A chance of rain. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mountlake Terrace WA
 47.78°N 122.31°W (Elev. 374 ft)
Last Update:
1:53 am PDT Mar 20, 2026
Forecast Valid:
8am PDT Mar 20, 2026-6pm PDT Mar 26, 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