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

57°F

14°C

Humidity 41%
Wind Speed WSW 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 13 Oct 05:15 PM PDT
Extended Forecast for

5 Miles S Hartline WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. Calm wind becoming east around 6 mph in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 65. East wind around 6 mph becoming calm in the afternoon.

    High: 65 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. Calm wind becoming northeast 5 to 7 mph after midnight.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 69. Northeast wind 8 to 10 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. Northeast wind 8 to 10 mph.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Windy.

    High: 67 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. Breezy.

    Low: 34 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. Calm wind becoming east around 6 mph in the evening.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 65. East wind around 6 mph becoming calm in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. Calm wind becoming northeast 5 to 7 mph after midnight.
Thursday
Mostly sunny, with a high near 69. Northeast wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 42. Northeast wind 8 to 10 mph.
Friday
Sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 67. Windy.
Saturday Night
Mostly clear, with a low around 34. Breezy.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Hartline WA
 47.62°N 119.09°W (Elev. 1818 ft)
Last Update:
4:52 pm PDT Oct 13, 2026
Forecast Valid:
5pm PDT Oct 13, 2026-6pm PDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation