Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains tonight, crossing the Midwest and reaching the Gulf Coast Friday night. Dangerously cold temperatures will persist across the eastern U.S. into early February. There is increasing confidence for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Overcast

25°F

-4°C

Humidity 68%
Wind Speed N 0 MPH
Barometer 30.43 in (1030.48 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 29 Jan 09:20 AM MST
Extended Forecast for

7 Miles NNE Mackay ID

  • Today

    Today: Mostly cloudy, with a high near 17. Wind chill values as low as -3. West northwest wind 10 to 14 mph.

    High: 17 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 14. Wind chill values as low as -3. West northwest wind 10 to 16 mph.

    Low: 14 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 24. Wind chill values as low as -4. West southwest wind 9 to 15 mph.

    High: 24 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15. Wind chill values as low as -1. West wind 11 to 18 mph.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 26. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph in the morning.

    High: 26 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow after 11am.  Mostly sunny, with a high near 23.

    High: 23 °F

    Slight Chance
    Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 17. Wind chill values as low as -3. West northwest wind 10 to 14 mph.
Tonight
Partly cloudy, with a steady temperature around 14. Wind chill values as low as -3. West northwest wind 10 to 16 mph.
Friday
Mostly cloudy, with a high near 24. Wind chill values as low as -4. West southwest wind 9 to 15 mph.
Friday Night
Mostly cloudy, with a low around 15. Wind chill values as low as -1. West wind 11 to 18 mph.
Saturday
Mostly sunny, with a high near 26. West northwest wind 16 to 21 mph decreasing to 10 to 15 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
A 20 percent chance of snow after 11am. Mostly sunny, with a high near 23.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Mostly sunny, with a high near 23.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNE Mackay ID
 44.01°N 113.58°W (Elev. 10722 ft)
4:31 am MST Jan 29, 2026
9am MST Jan 29, 2026-6pm MST Feb 4, 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