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

36°F

2°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 09 Dec 10:35 PM MST
Extended Forecast for

12 Miles N Mackay ID

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before 5am.  Mostly cloudy, with a temperature rising to around 29 by 3am. Windy, with a west wind 23 to 32 mph, with gusts as high as 46 mph.  Total nighttime snow accumulation of around an inch possible.

    Low: 26 °F

    Chance Snow
    and Windy

  • Wednesday

    Wednesday: A 20 percent chance of snow before 8am.  Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 28 by 5pm. Windy, with a west wind 32 to 37 mph decreasing to 22 to 27 mph in the morning. Winds could gust as high as 50 mph.

    High: 32 °F

    Slight Chance
    Snow and
    Windy then
    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24. Windy, with a west wind 25 to 32 mph, with gusts as high as 46 mph.

    Low: 24 °F

    Partly Cloudy
    and Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. Breezy, with a west wind 16 to 26 mph, with gusts as high as 32 mph.

    High: 29 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26. Breezy, with a west wind 17 to 22 mph, with gusts as high as 26 mph.

    Low: 26 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 29. Breezy.

    High: 29 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. Breezy.

    Low: 23 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of snow, mainly before 5am. Mostly cloudy, with a temperature rising to around 29 by 3am. Windy, with a west wind 23 to 32 mph, with gusts as high as 46 mph. Total nighttime snow accumulation of around an inch possible.
Wednesday
A 20 percent chance of snow before 8am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 28 by 5pm. Windy, with a west wind 32 to 37 mph decreasing to 22 to 27 mph in the morning. Winds could gust as high as 50 mph.
Wednesday Night
Partly cloudy, with a low around 24. Windy, with a west wind 25 to 32 mph, with gusts as high as 46 mph.
Thursday
Mostly sunny, with a high near 29. Breezy, with a west wind 16 to 26 mph, with gusts as high as 32 mph.
Thursday Night
Mostly cloudy, with a low around 26. Breezy, with a west wind 17 to 22 mph, with gusts as high as 26 mph.
Friday
Partly sunny, with a high near 29. Breezy.
Friday Night
Partly cloudy, with a low around 23. Breezy.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
A 20 percent chance of snow. Mostly sunny, with a high near 27.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 23.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 25. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles N Mackay ID
 44.09°N 113.65°W (Elev. 10279 ft)
10:31 pm MST Dec 9, 2025
10pm 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