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.

Mostly Cloudy

34°F

1°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 10 Dec 03:35 AM MST
Extended Forecast for

22 Miles NNW Mackay ID

  • Overnight

    Overnight: Snow likely, mainly before 5am.  Cloudy, with a steady temperature around 27. West wind 18 to 20 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 27 °F

    Snow Likely

  • Wednesday

    Wednesday: A 10 percent chance of snow before 7am.  Cloudy through mid morning, then gradual clearing, with a temperature falling to around 26 by 5pm. Breezy, with a west wind 15 to 22 mph, with gusts as high as 30 mph.

    High: 30 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 29 mph.

    Low: 23 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 27. Breezy, with a west wind 15 to 22 mph, with gusts as high as 29 mph.

    High: 27 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. West wind 14 to 16 mph, with gusts as high as 22 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 28.

    High: 28 °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 30.

    High: 30 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow likely, mainly before 5am. Cloudy, with a steady temperature around 27. West wind 18 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
A 10 percent chance of snow before 7am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 26 by 5pm. Breezy, with a west wind 15 to 22 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 23. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 27. Breezy, with a west wind 15 to 22 mph, with gusts as high as 29 mph.
Thursday Night
Mostly cloudy, with a low around 25. West wind 14 to 16 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Partly sunny, with a high near 28.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 24.
Tuesday
A 50 percent chance of snow. Mostly cloudy, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
22 Miles NNW Mackay ID
 44.18°N 113.79°W (Elev. 10712 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