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

12°F

-11°C

Humidity 76%
Wind Speed N 0 MPH
Barometer 30.62 in (1036.91 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Last update 29 Dec 07:55 AM MST
Extended Forecast for

21 Miles N Mackay ID

  • Today

    Today: Sunny, with a high near 29. Light and variable wind.

    High: 29 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 16. South wind around 5 mph becoming light and variable after midnight.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 33. Light west wind.

    High: 33 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 19. Southwest wind 3 to 6 mph.

    Low: 19 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. South southwest wind 3 to 5 mph.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 20 percent chance of snow. Mostly cloudy, with a high near 35.

    High: 35 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Slight Chance
    Snow

  • Friday

    Friday: A 30 percent chance of snow. Partly sunny, with a high near 36.

    High: 36 °F

    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 29. Light and variable wind.
Tonight
Partly cloudy, with a low around 16. South wind around 5 mph becoming light and variable after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 33. Light west wind.
Tuesday Night
Clear, with a low around 19. Southwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 38. South southwest wind 3 to 5 mph.
Wednesday Night
Mostly cloudy, with a low around 25.
New Year's Day
A 20 percent chance of snow. Mostly cloudy, with a high near 35.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27.
Friday
A 30 percent chance of snow. Partly sunny, with a high near 36.
Friday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 24.
Saturday
A 50 percent chance of snow. Partly sunny, with a high near 33.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles N Mackay ID
 44.22°N 113.62°W (Elev. 7218 ft)
Last Update:
4:31 am MST Dec 29, 2025
Forecast Valid:
8am MST Dec 29, 2025-6pm MST Jan 4, 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