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

32°F

0°C

Humidity 50%
Wind Speed N 0 MPH
Barometer 30.42 in (1030.14 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 30 Dec 03:20 PM MST
Extended Forecast for

18 Miles NNW Mackay ID

  • Tonight

    Tonight: Increasing clouds, with a low around 20. West southwest wind 8 to 13 mph.

    Low: 20 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 28. Southwest wind 8 to 13 mph.

    High: 28 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a steady temperature around 22. West southwest wind 10 to 14 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 20. West southwest wind 10 to 14 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. West southwest wind 9 to 14 mph. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow before 11am. Mostly cloudy, with a high near 22. Little or no snow accumulation expected.

    High: 22 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °F

    Slight Chance
    Snow and
    Breezy

  • Saturday

    Saturday: Snow likely. Mostly cloudy, with a high near 21. Breezy. Chance of precipitation is 60%.

    High: 21 °F

    Snow Likely
    and Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Chance Snow

Detailed Forecast

Tonight
Increasing clouds, with a low around 20. West southwest wind 8 to 13 mph.
Wednesday
Partly sunny, with a high near 28. Southwest wind 8 to 13 mph.
Wednesday Night
Mostly cloudy, with a steady temperature around 22. West southwest wind 10 to 14 mph.
New Year's Day
A 50 percent chance of snow. Cloudy, with a high near 20. West southwest wind 10 to 14 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. West southwest wind 9 to 14 mph. New snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow before 11am. Mostly cloudy, with a high near 22. Little or no snow accumulation expected.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 18. Breezy.
Saturday
Snow likely. Mostly cloudy, with a high near 21. Breezy. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 11.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 15.
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 15.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 10.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 15.
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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:
1:02 pm MST Dec 30, 2025
Forecast Valid:
3pm MST Dec 30, 2025-6pm MST Jan 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation