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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Overcast

54°F

12°C

Humidity 32%
Wind Speed NE 10 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 11 Oct 06:35 PM PDT
Extended Forecast for

Coulee City WA

  • Tonight

    Tonight: Mostly clear, with a low around 39. North wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Areas of frost between 8am and 9am. Otherwise, sunny, with a high near 60. North wind around 6 mph becoming light and variable.

    High: 60 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. South wind around 6 mph becoming east after midnight.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60. Northeast wind around 6 mph becoming light and variable.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. South wind around 6 mph becoming calm.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 39. North wind 8 to 13 mph, with gusts as high as 22 mph.
Columbus Day
Areas of frost between 8am and 9am. Otherwise, sunny, with a high near 60. North wind around 6 mph becoming light and variable.
Monday Night
Mostly clear, with a low around 37. South wind around 6 mph becoming east after midnight.
Tuesday
Sunny, with a high near 60. Northeast wind around 6 mph becoming light and variable.
Tuesday Night
Partly cloudy, with a low around 43. South wind around 6 mph becoming calm.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 48.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coulee City WA
 47.61°N 119.28°W (Elev. 1624 ft)
Last Update:
5:02 pm PDT Oct 11, 2026
Forecast Valid:
6pm PDT Oct 11, 2026-6pm PDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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