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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. 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 30.54 in (1034.2 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 30 Dec 06:05 AM MST
Extended Forecast for

18 Miles NNW Mackay ID

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 27. West wind 5 to 10 mph.

    High: 27 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 18. West southwest wind 8 to 11 mph.

    Low: 18 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 24. Southwest wind 8 to 13 mph.

    High: 24 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. West southwest wind 10 to 15 mph.

    Low: 19 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 50 percent chance of snow. Cloudy, with a high near 20. West southwest wind 10 to 15 mph. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Cloudy, with a low around 18. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 22. New snow accumulation of less than a half inch possible.

    High: 22 °F

    Chance Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow, mainly after 11pm. Cloudy, with a low around 19. Breezy.

    Low: 19 °F

    Chance Snow
    and Breezy

  • Saturday

    Saturday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 22. Breezy. Chance of precipitation is 60%.

    High: 22 °F

    Snow Likely
    and Breezy

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 27. West wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 18. West southwest wind 8 to 11 mph.
Wednesday
Partly sunny, with a high near 24. Southwest wind 8 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 19. West southwest wind 10 to 15 mph.
New Year's Day
A 50 percent chance of snow. Cloudy, with a high near 20. West southwest wind 10 to 15 mph. New snow accumulation of less than a half inch possible.
Thursday Night
A 30 percent chance of snow. Cloudy, with a low around 18. 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 22. New snow accumulation of less than a half inch possible.
Friday Night
A 40 percent chance of snow, mainly after 11pm. Cloudy, with a low around 19. Breezy.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 22. Breezy. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 11.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 14.
Sunday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 8.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 14.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NNW Mackay ID
 44.14°N 113.79°W (Elev. 11106 ft)
Last Update:
4:31 am MST Dec 30, 2025
Forecast Valid:
6am MST Dec 30, 2025-6pm MST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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