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.

Overcast

39°F

4°C

Humidity 64%
Wind Speed NW 6 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 09 Dec 07:05 PM MST
Extended Forecast for

6 Miles N Mackay ID

  • Tonight

    Tonight: A 40 percent chance of snow, mainly between 9pm and 4am.  Mostly cloudy, with a temperature rising to around 31 by 5am. Blustery, with a west northwest wind 17 to 25 mph, with gusts as high as 36 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow
    and Blustery

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. Breezy, with a west northwest wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 33 °F

    Decreasing
    Clouds and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Blustery, with a west northwest wind 22 to 24 mph, with gusts as high as 34 mph.

    Low: 27 °F

    Partly Cloudy
    and Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 32. West wind 13 to 21 mph.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. West wind 14 to 16 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 32.

    High: 32 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of snow, mainly between 9pm and 4am. Mostly cloudy, with a temperature rising to around 31 by 5am. Blustery, with a west northwest wind 17 to 25 mph, with gusts as high as 36 mph. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. Breezy, with a west northwest wind 23 to 28 mph decreasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph.
Wednesday Night
Partly cloudy, with a low around 27. Blustery, with a west northwest wind 22 to 24 mph, with gusts as high as 34 mph.
Thursday
Mostly sunny, with a high near 32. West wind 13 to 21 mph.
Thursday Night
Mostly cloudy, with a low around 28. West wind 14 to 16 mph.
Friday
Partly sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 29.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Tuesday
A 40 percent chance of snow. Partly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Mackay ID
 43.98°N 113.6°W (Elev. 10505 ft)
4:31 pm MST Dec 9, 2025
7pm 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