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

16°F

-9°C

Humidity 78%
Wind Speed N 0 MPH
Barometer 30.53 in (1033.86 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 30 Dec 02:20 AM MST
Extended Forecast for

21 Miles NNW Mackay ID

  • Overnight

    Overnight: Mostly clear, with a low around 15. West southwest wind around 9 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 33. West wind 3 to 8 mph.

    High: 33 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 20. Southwest wind 7 to 10 mph.

    Low: 20 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. West southwest wind 7 to 10 mph.

    High: 27 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 22. West southwest wind 9 to 13 mph.

    Low: 22 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 50 percent chance of snow.  Cloudy, with a high near 23. New snow accumulation of less than a half inch possible.

    High: 23 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow.  Cloudy, with a low around 21. New snow accumulation of less than a half inch possible.

    Low: 21 °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 40 percent chance of snow, mainly after 11pm.  Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 15. West southwest wind around 9 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 33. West wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 20. Southwest wind 7 to 10 mph.
Wednesday
Partly sunny, with a high near 27. West southwest wind 7 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 22. West southwest wind 9 to 13 mph.
New Year's Day
A 50 percent chance of snow. Cloudy, with a high near 23. New snow accumulation of less than a half inch possible.
Thursday Night
A 30 percent chance of snow. Cloudy, with a low around 21. New snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 25.
Friday Night
A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 22.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 13.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 17.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 11.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 17.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles NNW Mackay ID
 44.18°N 113.79°W (Elev. 10712 ft)
1:36 am MST Dec 30, 2025
2am MST Dec 30, 2025-6pm MST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database