Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Overcast

32°F

0°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 30.4 in (1029.46 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Jan 09:15 PM PST
Extended Forecast for

Grand Coulee WA

  • Tonight

    Tonight: Cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 35. Light and variable wind.

    High: 35 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Light northeast wind.

    High: 36 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23. Light north wind.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 27. Calm wind.
Wednesday
Cloudy, with a high near 35. Light and variable wind.
Wednesday Night
Mostly cloudy, with a low around 26. Calm wind.
Thursday
Mostly sunny, with a high near 36. Light northeast wind.
Thursday Night
Partly cloudy, with a low around 23. Light north wind.
Friday
Sunny, with a high near 37.
Friday Night
Mostly clear, with a low around 23.
Saturday
Mostly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Coulee WA
 47.94°N 119.02°W (Elev. 1601 ft)
8:47 pm PST Jan 20, 2026
9pm PST Jan 20, 2026-6pm PST Jan 27, 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