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

37°F

3°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 10 Dec 12:05 AM MST
Extended Forecast for

19 Miles NE Mackay ID

  • Overnight

    Overnight: A chance of snow before 4am, then a slight chance of rain and snow.  Mostly cloudy, with a low around 30. South southwest wind 11 to 17 mph becoming west. Winds could gust as high as 25 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 30 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. West northwest wind 14 to 21 mph, with gusts as high as 31 mph.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. West northwest wind 16 to 18 mph, with gusts as high as 26 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 38. West wind 10 to 14 mph.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. West wind 10 to 14 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of snow before 4am, then a slight chance of rain and snow. Mostly cloudy, with a low around 30. South southwest wind 11 to 17 mph becoming west. Winds could gust as high as 25 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
Mostly sunny, with a high near 39. West northwest wind 14 to 21 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 29. West northwest wind 16 to 18 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 38. West wind 10 to 14 mph.
Thursday Night
Mostly cloudy, with a low around 32. West wind 10 to 14 mph.
Friday
Partly sunny, with a high near 38.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 35.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 28.
Tuesday
A 40 percent chance of snow. Partly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles NE Mackay ID
 44.1°N 113.32°W (Elev. 8199 ft)
10:31 pm MST Dec 9, 2025
12am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database