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Hazardous Weather Conditions

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Mostly Cloudy

77°F

25°C

Humidity 47%
Wind Speed N 0 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Heat Index79°F (26°C)
Last update 17 Aug 09:55 PM PDT
Extended Forecast for

Hartline WA

  • Tonight

    Tonight: Widespread smoke, mainly before 11pm. Mostly cloudy, with a low around 63. West wind around 7 mph becoming northwest after midnight.

    Low: 63 °F

    Smoke

  • Tuesday

    Tuesday: Patchy smoke. Mostly cloudy, then gradually becoming sunny, with a high near 91. North wind 5 to 9 mph becoming southwest in the afternoon.

    High: 91 °F

    Patchy Smoke

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 60. Northwest wind 5 to 9 mph.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. North wind 5 to 8 mph becoming south in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. South wind 5 to 8 mph becoming northeast after midnight.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Thursday Night

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

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 93.

    High: 93 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Widespread smoke, mainly before 11pm. Mostly cloudy, with a low around 63. West wind around 7 mph becoming northwest after midnight.
Tuesday
Patchy smoke. Mostly cloudy, then gradually becoming sunny, with a high near 91. North wind 5 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 60. Northwest wind 5 to 9 mph.
Wednesday
Mostly sunny, with a high near 88. North wind 5 to 8 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 61. South wind 5 to 8 mph becoming northeast after midnight.
Thursday
Sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Partly sunny, with a high near 93.
Friday Night
A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 63.
Saturday
A 20 percent chance of showers before 11am. Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 55. Breezy.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hartline WA
 47.7°N 119.12°W (Elev. 1991 ft)
Last Update:
10:11 pm PDT Aug 17, 2026
Forecast Valid:
10pm PDT Aug 17, 2026-6pm PDT Aug 24, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation