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

28°F

-2°C

Humidity 92%
Wind Speed NW 4 MPH
Barometer 30.37 in (1028.45 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 21 Jan 06:35 AM PST
Extended Forecast for

Hartline WA

  • Today

    Today: Cloudy, with a high near 33. North wind around 6 mph.

    High: 33 °F

    Cloudy

  • Tonight

    Tonight: Cloudy, with a low around 25. North wind around 6 mph.

    Low: 25 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 35. Northeast wind around 6 mph.

    High: 35 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22. North wind 6 to 9 mph.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 34. North wind around 10 mph.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, with a high near 33. North wind around 6 mph.
Tonight
Cloudy, with a low around 25. North wind around 6 mph.
Thursday
Mostly cloudy, with a high near 35. Northeast wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 22. North wind 6 to 9 mph.
Friday
Sunny, with a high near 34. North wind around 10 mph.
Friday Night
Mostly clear, with a low around 20.
Saturday
Sunny, with a high near 32.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
Hartline WA
 47.7°N 119.12°W (Elev. 1991 ft)
2:57 am PST Jan 21, 2026
6am PST Jan 21, 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