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

Grand Coulee Dam Airport (K3W7)

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

Partly Cloudy

68°F

20°C

Humidity 52%
Wind Speed S 13 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 18 Mar 03:55 PM PDT
Extended Forecast for

Coulee City WA

  • Tonight

    Tonight: Cloudy, with a low around 51. Southwest wind 10 to 17 mph.

    Low: 51 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 66. Breezy, with a south wind 14 to 20 mph.

    High: 66 °F

    Cloudy then
    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 51. South wind 9 to 14 mph.

    Low: 51 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of rain. Mostly cloudy, with a high near 64. Breezy, with a southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon.

    High: 64 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 40. Breezy, with a west wind 15 to 22 mph.

    Low: 40 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 51. Southwest wind 10 to 17 mph.
Thursday
Mostly cloudy, with a high near 66. Breezy, with a south wind 14 to 20 mph.
Thursday Night
Mostly cloudy, with a low around 51. South wind 9 to 14 mph.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 64. Breezy, with a southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 40. Breezy, with a west wind 15 to 22 mph.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Mostly cloudy, with a high near 53.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 52.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Wednesday
A slight chance of rain and snow. Partly sunny, with a high near 51. Breezy. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Coulee City WA
 47.61°N 119.28°W (Elev. 1624 ft)
Last Update:
2:12 pm PDT Mar 18, 2026
Forecast Valid:
4pm PDT Mar 18, 2026-6pm PDT Mar 25, 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