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

Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Clear

84°F

29°C

Humidity 16%
Wind Speed WSW 13 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 04 Jul 05:15 PM PDT
Extended Forecast for

Coulee City WA

Red Flag Warning until July 4, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until July 4, 09:00pm

    NOW until 9:00pm Sat

    Red Flag Warning

  • Independence Day

    High: 88 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 59. Breezy, with a northwest wind 14 to 21 mph, with gusts as high as 33 mph.

    Low: 59 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 87. North wind 5 to 14 mph.

    High: 87 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. North wind 5 to 9 mph.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91. North wind 6 to 11 mph becoming light and variable in the morning.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Independence Day
Sunny, with a high near 88. Breezy, with a west wind around 18 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 59. Breezy, with a northwest wind 14 to 21 mph, with gusts as high as 33 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 87. North wind 5 to 14 mph.
Sunday Night
Mostly clear, with a low around 60. North wind 5 to 9 mph.
Monday
Sunny, with a high near 91. North wind 6 to 11 mph becoming light and variable in the morning.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Sunny, with a high near 84. Breezy.
Wednesday Night
Mostly clear, with a low around 56. Windy.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coulee City WA
 47.63°N 119.29°W (Elev. 1568 ft)
Last Update:
4:02 pm PDT Jul 4, 2026
Forecast Valid:
5pm PDT Jul 4, 2026-6pm PDT Jul 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation