Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Overcast

36°F

2°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 10 Dec 02:30 AM MST
Extended Forecast for

21 Miles WNW Mackay ID

  • Overnight

    Overnight: Rain likely, mainly before 3am.  Mostly cloudy, with a low around 33. Northwest wind around 6 mph.  Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 45. West northwest wind 6 to 10 mph.

    High: 45 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. West wind around 8 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 45. West wind 6 to 10 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. West wind 6 to 9 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Rain likely, mainly before 3am. Mostly cloudy, with a low around 33. Northwest wind around 6 mph. Chance of precipitation is 60%.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 45. West northwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 30. West wind around 8 mph.
Thursday
Mostly sunny, with a high near 45. West wind 6 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 32. West wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 44.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles WNW Mackay ID
 44.05°N 113.98°W (Elev. 6788 ft)
1:02 am MST Dec 10, 2025
2am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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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