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Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Coulee Dam Airport (K3W7)

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

Overcast

48°F

9°C

Humidity 66%
Wind Speed NE 10 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 11 Oct 06:55 AM PDT
Extended Forecast for

Hartline WA

Blowing Dust Advisory October 11, 09:00am until October 11, 05:00pm
Click here for hazard details and duration
Blowing Dust Advisory

  • Today

    Today: Patchy blowing dust after 11am. Mostly sunny, with a high near 58. Breezy, with a northeast wind 16 to 20 mph, with gusts as high as 38 mph.

    High: 58 °F

    Patchy
    Blowing Dust
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 31. North wind 9 to 11 mph, with gusts as high as 30 mph.

    Low: 31 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Widespread frost before 9am. Otherwise, sunny, with a high near 59. North wind 5 to 8 mph becoming west in the afternoon.

    High: 59 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 34. Southwest wind around 6 mph becoming east after midnight.

    Low: 34 °F

    Mostly Clear

  • Tuesday

    Tuesday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 61. East wind around 7 mph becoming south in the afternoon.

    High: 61 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
Patchy blowing dust after 11am. Mostly sunny, with a high near 58. Breezy, with a northeast wind 16 to 20 mph, with gusts as high as 38 mph.
Tonight
Mostly clear, with a low around 31. North wind 9 to 11 mph, with gusts as high as 30 mph.
Columbus Day
Widespread frost before 9am. Otherwise, sunny, with a high near 59. North wind 5 to 8 mph becoming west in the afternoon.
Monday Night
Mostly clear, with a low around 34. Southwest wind around 6 mph becoming east after midnight.
Tuesday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 61. East wind around 7 mph becoming south in the afternoon.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 66.
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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:
4:31 am PDT Oct 11, 2026
Forecast Valid:
7am PDT Oct 11, 2026-6pm PDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation