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

34°F

1°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 10 Dec 03:05 AM MST
Extended Forecast for

18 Miles NNW Mackay ID

  • Overnight

    Overnight: Snow likely, mainly between 4am and 5am.  Cloudy, with a steady temperature around 25. Breezy, with a west wind around 23 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Snow Likely
    and Breezy

  • Wednesday

    Wednesday: A 10 percent chance of snow before 7am.  Cloudy through mid morning, then gradual clearing, with a temperature falling to around 23 by 5pm. Breezy, with a west wind 17 to 24 mph, with gusts as high as 31 mph.

    High: 27 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 20. Breezy, with a west wind 18 to 26 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 25. Breezy, with a west wind 17 to 26 mph, with gusts as high as 30 mph.

    High: 25 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 22. West wind 16 to 20 mph, with gusts as high as 23 mph.

    Low: 22 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 25.

    High: 25 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19. Breezy.

    Low: 19 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow likely, mainly between 4am and 5am. Cloudy, with a steady temperature around 25. Breezy, with a west wind around 23 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
A 10 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 23 by 5pm. Breezy, with a west wind 17 to 24 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 20. Breezy, with a west wind 18 to 26 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 25. Breezy, with a west wind 17 to 26 mph, with gusts as high as 30 mph.
Thursday Night
Mostly cloudy, with a low around 22. West wind 16 to 20 mph, with gusts as high as 23 mph.
Friday
Partly sunny, with a high near 25.
Friday Night
Partly cloudy, with a low around 19. Breezy.
Saturday
Mostly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 25.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 21. Breezy.
Tuesday
A 50 percent chance of snow. Mostly cloudy, with a high near 23. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NNW Mackay ID
 44.14°N 113.79°W (Elev. 11106 ft)
1:02 am MST Dec 10, 2025
3am 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