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 WNW 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 09 Dec 11:30 PM MST
Extended Forecast for

22 Miles NNW Mackay ID

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before 5am.  Cloudy, with a temperature rising to around 28 by 5am. Breezy, with a west wind 20 to 26 mph, with gusts as high as 37 mph.  Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Chance Snow
    and Breezy

  • Wednesday

    Wednesday: A 20 percent chance of snow before 9am.  Cloudy through mid morning, then gradual clearing, with a temperature falling to around 27 by 5pm. Windy, with a west wind 21 to 30 mph, with gusts as high as 40 mph.

    High: 30 °F

    Slight Chance
    Snow and
    Windy then
    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Breezy, with a west wind 21 to 25 mph, with gusts as high as 36 mph.

    Low: 23 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 28. Breezy, with a west wind 14 to 22 mph, with gusts as high as 28 mph.

    High: 28 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. West wind 14 to 17 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of snow, mainly before 5am. Cloudy, with a temperature rising to around 28 by 5am. Breezy, with a west wind 20 to 26 mph, with gusts as high as 37 mph. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
A 20 percent chance of snow before 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 27 by 5pm. Windy, with a west wind 21 to 30 mph, with gusts as high as 40 mph.
Wednesday Night
Partly cloudy, with a low around 23. Breezy, with a west wind 21 to 25 mph, with gusts as high as 36 mph.
Thursday
Mostly sunny, with a high near 28. Breezy, with a west wind 14 to 22 mph, with gusts as high as 28 mph.
Thursday Night
Mostly cloudy, with a low around 25. West wind 14 to 17 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 29.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 27.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 23.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNW Mackay ID
 44.18°N 113.79°W (Elev. 10712 ft)
10:31 pm MST Dec 9, 2025
11pm MST Dec 9, 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