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

32°F

0°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 10 Dec 05:35 AM MST
Extended Forecast for

18 Miles NNW Mackay ID

  • Overnight

    Overnight: A 30 percent chance of snow.  Mostly cloudy, with a steady temperature around 28. Breezy, with a west wind around 26 mph, with gusts as high as 33 mph.  Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 28 °F

    Chance Snow
    and Breezy

  • Wednesday

    Wednesday: A 10 percent chance of snow before 7am.  Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 27 by 5pm. Breezy, with a west wind 17 to 26 mph, with gusts as high as 33 mph.

    High: 30 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a steady temperature around 27. Windy, with a west southwest wind 20 to 30 mph, with gusts as high as 33 mph.

    Low: 27 °F

    Mostly Clear
    and Windy

  • Thursday

    Thursday: Mostly sunny, with a high near 28. Windy, with a west wind 25 to 30 mph decreasing to 17 to 22 mph in the morning. Winds could gust as high as 33 mph.

    High: 28 °F

    Sunny and
    Windy then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. West wind 16 to 21 mph, with gusts as high as 24 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 28. Breezy.

    High: 28 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23. Breezy.

    Low: 23 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 30. Breezy.

    High: 30 °F

    Sunny and
    Breezy then
    Sunny

  • Saturday Night

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

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of snow. Mostly cloudy, with a steady temperature around 28. Breezy, with a west wind around 26 mph, with gusts as high as 33 mph. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
A 10 percent chance of snow before 7am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 27 by 5pm. Breezy, with a west wind 17 to 26 mph, with gusts as high as 33 mph.
Wednesday Night
Mostly clear, with a steady temperature around 27. Windy, with a west southwest wind 20 to 30 mph, with gusts as high as 33 mph.
Thursday
Mostly sunny, with a high near 28. Windy, with a west wind 25 to 30 mph decreasing to 17 to 22 mph in the morning. Winds could gust as high as 33 mph.
Thursday Night
Mostly cloudy, with a low around 25. West wind 16 to 21 mph, with gusts as high as 24 mph.
Friday
Mostly sunny, with a high near 28. Breezy.
Friday Night
Mostly clear, with a low around 23. Breezy.
Saturday
Sunny, with a high near 30. Breezy.
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 22.
Monday
Mostly sunny, with a high near 29.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 25. Breezy.
Tuesday
A 50 percent chance of snow. Partly sunny, with a high near 26. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles NNW Mackay ID
 44.16°N 113.76°W (Elev. 10427 ft)
4:31 am MST Dec 10, 2025
5am MST Dec 10, 2025-6pm MST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database