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

36°F

2°C

Humidity 89%
Wind Speed N 0 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 10 Dec 12:55 AM MST
Extended Forecast for

12 Miles NNW Mackay ID

  • Overnight

    Overnight: Snow likely, mainly before 3am.  Mostly cloudy, with a steady temperature around 26. Blustery, with a west wind 17 to 23 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Snow Likely
    and Blustery

  • Wednesday

    Wednesday: A 10 percent chance of snow before 7am.  Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 25 by 5pm. Blustery, with a west northwest wind 17 to 24 mph, with gusts as high as 29 mph.

    High: 29 °F

    Slight Chance
    Snow and
    Blustery then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Breezy, with a west wind 18 to 26 mph, with gusts as high as 29 mph.

    Low: 23 °F

    Partly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 26. Breezy, with a west northwest wind 16 to 25 mph, with gusts as high as 29 mph.

    High: 26 °F

    Sunny and
    Breezy then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23. West northwest wind 16 to 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 21. Breezy.

    Low: 21 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 28.

    High: 28 °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 before 3am. Mostly cloudy, with a steady temperature around 26. Blustery, with a west wind 17 to 23 mph, with gusts as high as 26 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. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 25 by 5pm. Blustery, with a west northwest wind 17 to 24 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 23. Breezy, with a west wind 18 to 26 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 26. Breezy, with a west northwest wind 16 to 25 mph, with gusts as high as 29 mph.
Thursday Night
Mostly cloudy, with a low around 23. West northwest wind 16 to 20 mph.
Friday
Partly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 21. Breezy.
Saturday
Mostly sunny, with a high near 28.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 26.
Monday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 22.
Tuesday
A 50 percent chance of snow. Mostly cloudy, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW Mackay ID
 44.06°N 113.71°W (Elev. 10755 ft)
1:02 am MST Dec 10, 2025
1am 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