Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

21°F

-6°C

Humidity 67%
Wind Speed SSE 3 MPH
Barometer 30.54 in (1034.2 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 29 Dec 08:20 PM MST
Extended Forecast for

13 Miles NNW Mackay ID

  • Tonight

    Tonight: Partly cloudy, with a low around 14. West northwest wind around 8 mph.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 28. West northwest wind 3 to 7 mph.

    High: 28 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. West wind 6 to 9 mph.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 28. West wind 6 to 9 mph.

    High: 28 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. West wind 7 to 10 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 22. New snow accumulation of less than a half inch possible.

    High: 22 °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 24.

    High: 24 °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 around 8 mph.
Tuesday
Sunny, with a high near 28. West northwest wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 20. West wind 6 to 9 mph.
Wednesday
Partly sunny, with a high near 28. West wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 22. West wind 7 to 10 mph.
New Year's Day
A 40 percent chance of snow. Cloudy, with a high near 22. New snow accumulation of less than a half inch possible.
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 24.
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 22.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 13.
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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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mackay ID
 44.08°N 113.74°W (Elev. 10069 ft)
8:20 pm MST Dec 29, 2025
8pm MST Dec 29, 2025-6pm MST Jan 5, 2026
 
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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