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

Snow Expected from the Ohio Valley into the Mid-Atlantic; Rain and Thunderstorms in the Southeast

A frontal system is expected to bring wintry precipitation to the Central Appalachians and portions of the Mid-Atlantic into Wednesday, meanwhile, showers and thunderstorms are expected along the Gulf Coast and Southeast. A series of Clipper systems will bring periods of snow to the Northern Plains and Great Lakes over the next several days. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Clear

39°F

4°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.48 in (1032.17 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 03 Feb 07:55 PM PST
Extended Forecast for

Grand Coulee WA

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 38. Light east wind.

    Low: 38 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy dense fog before noon. Otherwise, partly sunny, with a high near 51. Light northeast wind.

    High: 51 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 36. North wind 3 to 5 mph.

    Low: 36 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. North wind around 5 mph.

    High: 52 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 35. Light north wind.

    Low: 35 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 49.

    High: 49 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 38. Light east wind.
Wednesday
Patchy dense fog before noon. Otherwise, partly sunny, with a high near 51. Light northeast wind.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 36. North wind 3 to 5 mph.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. North wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 35. Light north wind.
Friday
Mostly cloudy, with a high near 49.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 49.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 41.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 48.
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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:
2:41 pm PST Feb 3, 2026
Forecast Valid:
8pm PST Feb 3, 2026-6pm PST Feb 10, 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