Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

19°F

-7°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 20 Jan 09:05 PM MST
Extended Forecast for

13 Miles NNW Mackay ID

  • Tonight

    Tonight: Mostly clear, with a low around 10. Wind chill values as low as -5. West northwest wind around 11 mph.

    Low: 10 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Wind chill values as low as -4. West northwest wind 7 to 10 mph.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11. Wind chill values as low as -3. West wind 8 to 10 mph.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 20. Wind chill values as low as -3. West wind 7 to 11 mph.

    High: 20 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 5. West wind 7 to 10 mph.

    Low: 5 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 0.

    Low: 0 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 11.

    High: 11 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 10. Wind chill values as low as -5. West northwest wind around 11 mph.
Wednesday
Mostly sunny, with a high near 23. Wind chill values as low as -4. West northwest wind 7 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 11. Wind chill values as low as -3. West wind 8 to 10 mph.
Thursday
Mostly sunny, with a high near 20. Wind chill values as low as -3. West wind 7 to 11 mph.
Thursday Night
Partly cloudy, with a low around 5. West wind 7 to 10 mph.
Friday
Mostly sunny, with a high near 13.
Friday Night
Mostly clear, with a low around 0.
Saturday
Sunny, with a high near 11.
Saturday Night
Mostly clear, with a low around 3.
Sunday
Sunny, with a high near 17.
Sunday Night
Partly cloudy, with a low around 8.
Monday
Partly sunny, with a high near 20.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Mostly sunny, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mackay ID
 44.08°N 113.74°W (Elev. 10069 ft)
4:31 pm MST Jan 20, 2026
9pm MST Jan 20, 2026-6pm MST Jan 27, 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