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

27°F

-3°C

Humidity 45%
Wind Speed N 0 MPH
Barometer 30.53 in (1033.86 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 29 Dec 03:35 PM MST
Extended Forecast for

16 Miles NNW Mackay ID

  • Tonight

    Tonight: Partly cloudy, with a low around 14. West northwest wind 6 to 10 mph.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. Northwest wind 5 to 9 mph.

    High: 27 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19. West wind 6 to 10 mph.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 26. West southwest wind 7 to 10 mph.

    High: 26 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. West wind 8 to 11 mph.

    Low: 21 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 40 percent chance of snow. Cloudy, with a high near 22. Little or no snow accumulation expected.

    High: 22 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Cloudy, with a low around 19. Little or no snow accumulation expected.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 23.

    High: 23 °F

    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 14. West northwest wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 27. Northwest wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 19. West wind 6 to 10 mph.
Wednesday
Partly sunny, with a high near 26. West southwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 21. West wind 8 to 11 mph.
New Year's Day
A 40 percent chance of snow. Cloudy, with a high near 22. Little or no snow accumulation expected.
Thursday Night
A 30 percent chance of snow. Cloudy, with a low around 19. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 23.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 19.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 21.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 18.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NNW Mackay ID
 44.1°N 113.78°W (Elev. 10531 ft)
Last Update:
1:01 pm MST Dec 29, 2025
Forecast Valid:
3pm MST Dec 29, 2025-6pm MST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation