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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

Lat: 47.92205°NLon: 119.083°WElev: 1593.0ft.

Overcast

34°F

1°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 15 Feb 06:55 AM PST
Extended Forecast for

Grand Coulee WA

  • Today

    Today: Mostly sunny, with a high near 45. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain and snow after 4am. Increasing clouds, with a low around 35. South wind around 5 mph becoming light and variable. Chance of precipitation is 10%.

    Low: 35 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Washington's Birthday

    Washington's Birthday: A chance of rain and snow, mainly after 7am. Mostly cloudy, with a high near 42. South wind 5 to 9 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly between 7pm and 10pm. Mostly cloudy, with a low around 30. East wind around 6 mph. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly after 10am. Partly sunny, with a high near 41. Southeast wind 6 to 8 mph. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly before 4pm. Partly sunny, with a high near 39. Little or no snow accumulation expected.

    High: 39 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before 10pm. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow. Partly sunny, with a high near 37.

    High: 37 °F

    Slight Chance
    Snow

Detailed Forecast

Today
Mostly sunny, with a high near 45. Light and variable wind becoming southwest around 6 mph in the afternoon.
Tonight
A slight chance of rain and snow after 4am. Increasing clouds, with a low around 35. South wind around 5 mph becoming light and variable. Chance of precipitation is 10%.
Washington's Birthday
A chance of rain and snow, mainly after 7am. Mostly cloudy, with a high near 42. South wind 5 to 9 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Monday Night
A 30 percent chance of snow, mainly between 7pm and 10pm. Mostly cloudy, with a low around 30. East wind around 6 mph. New snow accumulation of less than a half inch possible.
Tuesday
A 30 percent chance of snow, mainly after 10am. Partly sunny, with a high near 41. Southeast wind 6 to 8 mph. Little or no snow accumulation expected.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.
Wednesday
A 30 percent chance of snow, mainly before 4pm. Partly sunny, with a high near 39. Little or no snow accumulation expected.
Wednesday Night
A 20 percent chance of snow before 10pm. Mostly cloudy, with a low around 25.
Thursday
A 20 percent chance of snow. Partly sunny, with a high near 37.
Thursday Night
A slight chance of snow before 10pm, then a slight chance of snow after 4am. Mostly cloudy, with a low around 23. Chance of precipitation is 20%.
Friday
A 30 percent chance of snow. Mostly sunny, with a high near 37.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grand Coulee WA
 47.94°N 119.02°W (Elev. 1601 ft)
Last Update:
4:31 am PST Feb 15, 2026
Forecast Valid:
7am PST Feb 15, 2026-6pm PST Feb 21, 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