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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

12°F

-11°C

Humidity 78%
Wind Speed N 0 MPH
Barometer 30.35 in (1027.77 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 28 Dec 05:20 AM MST
Extended Forecast for

7 Miles NNE Mackay ID

  • Today

    Today: Sunny and cold, with a high near 8. Wind chill values as low as -29. North northwest wind 16 to 21 mph decreasing to 8 to 13 mph in the morning.

    High: 8 °F

    Cold

  • Tonight

    Tonight: Mostly clear, with a temperature rising to around 7 by 5am. Wind chill values as low as -13. North northwest wind 10 to 13 mph.

    Low: 3 °F⇑

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 18. Wind chill values as low as -6. West wind 5 to 11 mph.

    High: 18 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 10. Wind chill values as low as -4. West northwest wind 6 to 10 mph.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 21. West northwest wind 5 to 11 mph.

    High: 21 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

Detailed Forecast

Today
Sunny and cold, with a high near 8. Wind chill values as low as -29. North northwest wind 16 to 21 mph decreasing to 8 to 13 mph in the morning.
Tonight
Mostly clear, with a temperature rising to around 7 by 5am. Wind chill values as low as -13. North northwest wind 10 to 13 mph.
Monday
Sunny, with a high near 18. Wind chill values as low as -6. West wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 10. Wind chill values as low as -4. West northwest wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 21. West northwest wind 5 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Sunny, with a high near 23.
Wednesday Night
Mostly cloudy, with a low around 14.
New Year's Day
Partly sunny, with a high near 22.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 19.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 10.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 16.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNE Mackay ID
 44.01°N 113.58°W (Elev. 10722 ft)
Last Update:
4:31 am MST Dec 28, 2025
Forecast Valid:
5am MST Dec 28, 2025-6pm MST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation