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

21 Miles NNW Mackay ID

  • Tonight

    Tonight: Partly cloudy, with a low around 16. West wind 6 to 9 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28. West southwest wind 3 to 8 mph.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. West southwest wind 6 to 10 mph.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. West southwest wind 6 to 10 mph.

    High: 27 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. West southwest wind 8 to 13 mph.

    Low: 22 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 40 percent chance of snow. Cloudy, with a high near 23. Little or no snow accumulation expected.

    High: 23 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Cloudy, with a low around 20. Little or no snow accumulation expected.

    Low: 20 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 25.

    High: 25 °F

    Chance Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 16. West wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 28. West southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 20. West southwest wind 6 to 10 mph.
Wednesday
Partly sunny, with a high near 27. West southwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 22. West southwest wind 8 to 13 mph.
New Year's Day
A 40 percent chance of snow. Cloudy, with a high near 23. Little or no snow accumulation expected.
Thursday Night
A 30 percent chance of snow. Cloudy, with a low around 20. Little or no snow accumulation expected.
Friday
A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 25.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 20.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 22.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 19.
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 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles NNW Mackay ID
 44.18°N 113.79°W (Elev. 10712 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

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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