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

21°F

-6°C

Humidity 57%
Wind Speed SSE 3 MPH
Barometer 30.6 in (1036.24 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 29 Dec 11:35 AM MST
Extended Forecast for

22 Miles NNW Mackay ID

  • Today

    Today: Sunny, with a high near 21. West wind around 6 mph.

    High: 21 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 19. West wind 6 to 9 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 31. West wind 3 to 8 mph.

    High: 31 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 17. West wind 6 to 9 mph.

    Low: 17 °F

    Mostly Clear

  • Wednesday

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

    High: 27 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 20 percent chance of snow. Mostly cloudy, with a high near 23.

    High: 23 °F

    Slight Chance
    Snow

  • Thursday Night

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

    Low: 20 °F

    Chance Snow

  • Friday

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

    High: 23 °F

    Chance Snow

Detailed Forecast

Today
Sunny, with a high near 21. West wind around 6 mph.
Tonight
Partly cloudy, with a low around 19. West wind 6 to 9 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 31. West wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 17. West wind 6 to 9 mph.
Wednesday
Mostly sunny, with a high near 27. West southwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 19.
New Year's Day
A 20 percent chance of snow. Mostly cloudy, with a high near 23.
Thursday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 20.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 23.
Friday Night
A 40 percent chance of snow. 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 30 percent chance of snow. Mostly cloudy, with a high near 20.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNW Mackay ID
 44.18°N 113.79°W (Elev. 10712 ft)
Last Update:
10:31 am MST Dec 29, 2025
Forecast Valid:
11am MST Dec 29, 2025-6pm MST Jan 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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