Winter Weather in the Eastern U.S.; Heavy Rains Begin Across the Southern Plains into the Ohio Valley

A wintry mix may impact travel across portions of the Mid-Atlantic through the morning and the Northeast U.S. through Tuesday. Heavy rain and thunderstorms may cause a flooding threat across the Southern Plains into the Ohio Valley beginning Tuesday. Fire weather concerns will continue across portions of the central and southern High Plains through Wednesday. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Clear

34°F

1°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 03 Mar 01:15 AM PST
Extended Forecast for

Grand Coulee WA

  • Overnight

    Overnight: Partly cloudy, with a low around 35. Southeast wind around 6 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southeast wind 6 to 10 mph becoming southwest in the afternoon.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 1am.  Mostly cloudy, with a low around 42. South wind around 6 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Cloudy then
    Chance Rain

  • Wednesday

    Wednesday: Rain likely.  Mostly cloudy, with a high near 54. South wind 6 to 9 mph becoming west in the afternoon.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. West wind around 7 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. Southeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 56. Southeast wind 6 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 42. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely. Mostly cloudy, with a high near 54. South wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 35. West wind around 7 mph.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 54.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly cloudy, with a high near 58.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 59.
Sunday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 41. Chance of precipitation is 20%.
Monday
A slight chance of rain and snow. Mostly sunny, with a high near 54. Breezy. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Grand Coulee WA
 47.94°N 119.02°W (Elev. 1601 ft)
1:13 am PST Mar 3, 2026
1am PST Mar 3, 2026-6pm PDT Mar 9, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database