Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

Lat: 44.523°NLon: 114.21611°WElev: 5026.0ft.

Rain

41°F

5°C

Humidity 60%
Wind Speed NNE 12 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 09 Dec 05:35 PM MST
Extended Forecast for

8 Miles NNE Mackay ID

  • Tonight

    Tonight: A 40 percent chance of snow, mainly between 9pm and 5am.  Mostly cloudy, with a temperature rising to around 29 by 5am. Breezy, with a west wind 20 to 28 mph, with gusts as high as 38 mph.  Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Chance Snow
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a temperature falling to around 28 by 5pm. Windy, with a west wind 23 to 33 mph, with gusts as high as 47 mph.

    High: 31 °F

    Mostly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. Breezy, with a west wind 25 to 29 mph, with gusts as high as 39 mph.

    Low: 25 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. Blustery, with a west northwest wind 16 to 23 mph, with gusts as high as 31 mph.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. West northwest wind 16 to 20 mph, with gusts as high as 26 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly between 9pm and 5am. Mostly cloudy, with a temperature rising to around 29 by 5am. Breezy, with a west wind 20 to 28 mph, with gusts as high as 38 mph. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Mostly sunny, with a temperature falling to around 28 by 5pm. Windy, with a west wind 23 to 33 mph, with gusts as high as 47 mph.
Wednesday Night
Partly cloudy, with a low around 25. Breezy, with a west wind 25 to 29 mph, with gusts as high as 39 mph.
Thursday
Mostly sunny, with a high near 29. Blustery, with a west northwest wind 16 to 23 mph, with gusts as high as 31 mph.
Thursday Night
Mostly cloudy, with a low around 25. West northwest wind 16 to 20 mph, with gusts as high as 26 mph.
Friday
Partly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 20.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 26.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNE Mackay ID
 44.01°N 113.55°W (Elev. 10650 ft)
4:31 pm MST Dec 9, 2025
5pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
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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