National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

22°F

-6°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 30.53 in (1033.86 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 29 Dec 05:55 PM MST
Extended Forecast for

23 Miles NW Mackay ID

  • Tonight

    Tonight: Partly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 35. Calm wind.

    High: 35 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. Light south southwest wind.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29. South wind around 5 mph.

    Low: 29 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 30 percent chance of snow, mainly after 11am. Cloudy, with a high near 36. Little or no snow accumulation expected.

    High: 36 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 20. Calm wind.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 35. Calm wind.
Tuesday Night
Mostly clear, with a low around 23. Calm wind.
Wednesday
Partly sunny, with a high near 40. Light south southwest wind.
Wednesday Night
Mostly cloudy, with a low around 29. South wind around 5 mph.
New Year's Day
A 30 percent chance of snow, mainly after 11am. Cloudy, with a high near 36. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.
Friday
A slight chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 20%.
Friday Night
A chance of rain and snow before 2am, then a chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 35.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 23.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 32.
Sunday Night
A 20 percent chance of snow. Partly cloudy, with a low around 21.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
23 Miles NW Mackay ID
 44.17°N 113.88°W (Elev. 6821 ft)
Last Update:
4:31 pm MST Dec 29, 2025
Forecast Valid:
6pm MST Dec 29, 2025-6pm MST Jan 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation