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.

Clear

43°F

6°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 15 Oct 11:35 PM PDT
Extended Forecast for

2 Miles WNW Coulee City WA

  • Overnight

    Overnight: Mostly clear, with a low around 35. Light and variable wind.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Areas of frost before 8am. Otherwise, sunny, with a high near 60. East wind 5 to 10 mph becoming south in the afternoon.

    High: 60 °F

    Areas Frost
    then Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 40. Southwest wind 6 to 9 mph becoming west in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 63. West wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 36. Northwest wind 7 to 16 mph.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 11pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers. Partly sunny, with a high near 60. Breezy.

    High: 60 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 35. Light and variable wind.
Thursday
Areas of frost before 8am. Otherwise, sunny, with a high near 60. East wind 5 to 10 mph becoming south in the afternoon.
Thursday Night
Mostly cloudy, with a low around 40. Southwest wind 6 to 9 mph becoming west in the evening.
Friday
Sunny, with a high near 63. West wind 9 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 36. Northwest wind 7 to 16 mph.
Saturday
Partly sunny, with a high near 58.
Saturday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 60. Breezy.
Sunday Night
Partly cloudy, with a low around 38. Breezy.
Monday
Sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Coulee City WA
 47.63°N 119.32°W (Elev. 1568 ft)
Last Update:
10:15 pm PDT Oct 15, 2025
Forecast Valid:
12am PDT Oct 16, 2025-6pm PDT Oct 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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