Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Partly Cloudy

32°F

0°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 31 Jan 08:35 PM PST
Extended Forecast for

Grand Coulee WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. East wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of rain after 10am.  Mostly cloudy, with a high near 44. Light and variable wind becoming southwest 5 to 7 mph in the morning.  New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 35. Southeast wind 3 to 6 mph.

    Low: 35 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain after 10am.  Mostly cloudy, with a high near 46. Southeast wind around 6 mph.

    High: 46 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Tuesday Night

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

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. East wind 3 to 5 mph.
Sunday
A 50 percent chance of rain after 10am. Mostly cloudy, with a high near 44. Light and variable wind becoming southwest 5 to 7 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly cloudy, with a low around 35. Southeast wind 3 to 6 mph.
Monday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 46. Southeast wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 36. Northeast wind 3 to 5 mph.
Tuesday
Mostly cloudy, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 35.
Saturday
A 10 percent chance of rain. Partly sunny, with a high near 48.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Coulee WA
 47.94°N 119.02°W (Elev. 1601 ft)
3:01 pm PST Jan 31, 2026
8pm PST Jan 31, 2026-6pm PST Feb 7, 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