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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Overcast

37°F

3°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 Feb 07:55 PM PST
Extended Forecast for

Grand Coulee WA

  • Tonight

    Tonight: A 50 percent chance of rain. Mostly cloudy, with a low around 37. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 45. Southwest wind around 6 mph.

    High: 45 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45. Light and variable wind becoming north around 5 mph in the morning.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow after 4am. Partly cloudy, with a low around 35. Light east wind. Little or no snow accumulation expected.

    Low: 35 °F

    Partly Cloudy
    then Chance
    Snow

  • Washington's Birthday

    Washington's Birthday: Snow likely before 1pm, then rain likely, possibly mixed with snow. Cloudy, with a high near 42. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Monday Night

    Monday Night: Rain likely, mainly after 4am. Cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain likely, possibly mixed with snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.

    High: 42 °F

    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: A chance of rain before 7pm, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
A 50 percent chance of rain. Mostly cloudy, with a low around 37. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly cloudy, with a high near 45. Southwest wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 33. Light and variable wind.
Sunday
Mostly sunny, with a high near 45. Light and variable wind becoming north around 5 mph in the morning.
Sunday Night
A 30 percent chance of snow after 4am. Partly cloudy, with a low around 35. Light east wind. Little or no snow accumulation expected.
Washington's Birthday
Snow likely before 1pm, then rain likely, possibly mixed with snow. Cloudy, with a high near 42. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Rain likely, mainly after 4am. Cloudy, with a low around 35. Chance of precipitation is 60%.
Tuesday
Rain likely, possibly mixed with snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Tuesday Night
A chance of rain before 7pm, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Wednesday
A chance of snow before 4pm, then a chance of rain and snow. Partly sunny, with a high near 39. Chance of precipitation is 30%.
Wednesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 28. Chance of precipitation is 20%.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 39.
Thursday Night
A 20 percent chance of snow. Partly cloudy, with a low around 27.
Friday
A 30 percent chance of snow. Mostly sunny, with a high near 40.
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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:
2:37 pm PST Feb 13, 2026
Forecast Valid:
8pm PST Feb 13, 2026-6pm PST Feb 20, 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