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

28°F

-2°C

Humidity 42%
Wind Speed N 3 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 21 Jan 01:00 PM MST
Extended Forecast for

9 Miles NNW Mackay ID

  • This Afternoon

    This Afternoon: Sunny, with a high near 22. West northwest wind around 8 mph.

    High: 22 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 10. Wind chill values as low as -6. West northwest wind 10 to 14 mph.

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 20. Wind chill values as low as -5. West northwest wind 6 to 13 mph.

    High: 20 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7. Wind chill values as low as -9. West wind 7 to 11 mph.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 11. West wind 14 to 16 mph, with gusts as high as 24 mph.

    High: 11 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around -4. Blustery.

    Low: -4 °F

    Mostly Clear
    then Mostly
    Clear and
    Blustery

  • Saturday

    Saturday: Sunny and cold, with a high near 8. Blustery.

    High: 8 °F

    Sunny and
    Blustery then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 2.

    Low: 2 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 14.

    High: 14 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 22. West northwest wind around 8 mph.
Tonight
Partly cloudy, with a low around 10. Wind chill values as low as -6. West northwest wind 10 to 14 mph.
Thursday
Mostly sunny, with a high near 20. Wind chill values as low as -5. West northwest wind 6 to 13 mph.
Thursday Night
Mostly cloudy, with a low around 7. Wind chill values as low as -9. West wind 7 to 11 mph.
Friday
Mostly sunny, with a high near 11. West wind 14 to 16 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around -4. Blustery.
Saturday
Sunny and cold, with a high near 8. Blustery.
Saturday Night
Mostly clear, with a low around 2.
Sunday
Sunny, with a high near 14.
Sunday Night
Mostly clear, with a low around 4.
Monday
Mostly sunny, with a high near 17.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Mackay ID
 44.05°N 113.65°W (Elev. 11194 ft)
1:17 pm MST Jan 21, 2026
1pm MST Jan 21, 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