Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

SEATTLE WEATHER FORECAST OFFICE (SEAW1)

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

NA

50°F

10°C

Humidity 99%
Wind Speed S 9 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 50°F (10°C)
Visibility NA
Wind Chill46°F (8°C)
Last update 19 Mar 04:30 AM PDT
Extended Forecast for

Sammamish WA

Flood Watch March 19, 04:52am until March 20, 05:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch March 19, 04:52am until March 20, 05:00pm

    NOW until 5:00pm Fri

    Flood Watch

  • Overnight

    Low: 51 °F

    Rain

  • Thursday

    Thursday: Rain.  High near 57. South wind around 7 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain

  • Thursday Night

    Thursday Night: Rain.  Low around 52. South wind around 6 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Rain

  • Friday

    Friday: Rain.  High near 56. South southwest wind 6 to 10 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Rain

  • Friday Night

    Friday Night: Rain before 11pm, then a chance of showers after 11pm.  Low around 39. South southwest wind 5 to 10 mph becoming north northwest after midnight.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain then
    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers, mainly before 11am.  Partly sunny, with a high near 49.

    High: 49 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers.  Partly sunny, with a high near 53.

    High: 53 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Rain. Low around 51. South wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. High near 57. South wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 52. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 56. South southwest wind 6 to 10 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain before 11pm, then a chance of showers after 11pm. Low around 39. South southwest wind 5 to 10 mph becoming north northwest after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 40 percent chance of showers, mainly before 11am. Partly sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
A slight chance of showers. Partly sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
A slight chance of showers after 11am. Mostly cloudy, with a high near 55.
Monday Night
Rain likely. Mostly cloudy, with a low around 44.
Tuesday
Rain. Cloudy, with a high near 53.
Tuesday Night
Rain. Mostly cloudy, with a low around 38.
Wednesday
Rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Sammamish WA
 47.6°N 122.03°W (Elev. 463 ft)
3:02 am PDT Mar 19, 2026
4am PDT Mar 19, 2026-6pm PDT Mar 25, 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