Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Clear

55°F

13°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 09 Sep 12:55 AM PDT
Extended Forecast for

Coulee City WA

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 59. East wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. East wind 5 to 11 mph becoming south in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59. South wind 5 to 9 mph becoming west after midnight.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy blowing dust after 5pm. Mostly sunny, with a high near 76. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph.

    High: 76 °F

    Breezy.
    Mostly Sunny
    then Patchy
    Blowing Dust

  • Thursday Night

    Thursday Night: Patchy blowing dust before 8pm. Partly cloudy, with a low around 54. Breezy, with a northwest wind 17 to 24 mph, with gusts as high as 39 mph.

    Low: 54 °F

    Breezy.
    Patchy
    Blowing Dust
    then Partly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after 11am.  Mostly cloudy, with a high near 68. Windy.

    High: 68 °F

    Chance
    Showers and
    Windy

  • Saturday Night

    Saturday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 59. East wind around 6 mph.
Wednesday
Mostly sunny, with a high near 78. East wind 5 to 11 mph becoming south in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 59. South wind 5 to 9 mph becoming west after midnight.
Thursday
Patchy blowing dust after 5pm. Mostly sunny, with a high near 76. Breezy, with a west wind 6 to 11 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph.
Thursday Night
Patchy blowing dust before 8pm. Partly cloudy, with a low around 54. Breezy, with a northwest wind 17 to 24 mph, with gusts as high as 39 mph.
Friday
Partly sunny, with a high near 70.
Friday Night
Mostly cloudy, with a low around 55.
Saturday
A 40 percent chance of showers after 11am. Mostly cloudy, with a high near 68. Windy.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Sunday
A 20 percent chance of showers before 11am. Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Coulee City WA
 47.61°N 119.28°W (Elev. 1624 ft)
11:32 pm PDT Sep 8, 2026
1am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
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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