Heavy Rain in the Southern U.S.; Winter Storm to Impact the Northern Mid-Atlantic and Interior Northeast

A storm system stretching from the Tennessee Valley to the Gulf Coast will bring a variety of hazards to the Eastern U.S. through Tuesday. On the south side of the system, heavy rain and thunderstorms will persist across the Southern U.S. Further north, a wintry precipitation mix is expected from the Central Appalachians to the interior Northeast through Tuesday. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

light rain,mist

34°F

1°C

Humidity 86%
Wind Speed WSW 3 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 30°F (-1°C)
Visibility 4.00 mi
Last update 01 Dec 05:15 PM PST
Extended Forecast for

Grand Coulee WA

  • This Afternoon

    This Afternoon: A 20 percent chance of snow.  Mostly cloudy, with a high near 34. Calm wind.

    High: 34 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: A 20 percent chance of snow before 10pm.  Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 38. Light and variable wind becoming northwest around 6 mph in the morning.

    High: 38 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 29. Light and variable wind.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 40. Southeast wind 3 to 6 mph.

    High: 40 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow between 10am and 4pm.  Mostly cloudy, with a high near 38. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow, mainly after 4am.  Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 7am, then a chance of rain.  Mostly cloudy, with a high near 42. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

This Afternoon
A 20 percent chance of snow. Mostly cloudy, with a high near 34. Calm wind.
Tonight
A 20 percent chance of snow before 10pm. Mostly cloudy, with a low around 31. Calm wind.
Tuesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 38. Light and variable wind becoming northwest around 6 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 29. Light and variable wind.
Wednesday
Mostly cloudy, with a high near 40. Southeast wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A slight chance of rain and snow between 10am and 4pm. Mostly cloudy, with a high near 38. Chance of precipitation is 20%.
Thursday Night
A chance of rain and snow, mainly after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Friday
A chance of rain and snow before 7am, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 34.
Saturday
Partly sunny, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 45.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Coulee WA
 47.94°N 119.02°W (Elev. 1601 ft)
2:58 pm PST Dec 1, 2025
5pm PST Dec 1, 2025-6pm PST Dec 8, 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