Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

Lat: 44.523°NLon: 114.21611°WElev: 5026.0ft.

Overcast

41°F

5°C

Humidity 60%
Wind Speed S 6 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 07 Dec 06:20 PM MST
Extended Forecast for

16 Miles NNW Mackay ID

  • Tonight

    Tonight: A 50 percent chance of snow before 11pm. The snow could be heavy at times.  Mostly cloudy, with a low around 14. Wind chill values as low as -1. West northwest wind 10 to 16 mph, with gusts as high as 23 mph.  Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 14 °F

    Heavy Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 23. Wind chill values as low as -2. West southwest wind 11 to 16 mph, with gusts as high as 22 mph.

    High: 23 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 50 percent chance of snow.  Cloudy, with a temperature rising to around 26 by 5am. West southwest wind 14 to 21 mph, with gusts as high as 31 mph.  New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow

  • Tuesday

    Tuesday: Snow likely.  Cloudy, with a high near 26. Breezy, with a west wind 17 to 22 mph, with gusts as high as 34 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 26 °F

    Snow Likely
    and Breezy

  • Tuesday Night

    Tuesday Night: Snow.  Low around 23. Breezy, with a west wind 14 to 22 mph, with gusts as high as 36 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Low: 23 °F

    Snow and
    Breezy

  • Wednesday

    Wednesday: Snow.  High near 29. Breezy.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 29 °F

    Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 26. Breezy.  New snow accumulation of less than one inch possible.

    Low: 26 °F

    Chance Snow
    and Breezy

  • Thursday

    Thursday: A 40 percent chance of snow, mainly before 11am.  Mostly cloudy, with a high near 28. Breezy.

    High: 28 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of snow before 11pm. The snow could be heavy at times. Mostly cloudy, with a low around 14. Wind chill values as low as -1. West northwest wind 10 to 16 mph, with gusts as high as 23 mph. Total nighttime snow accumulation of 1 to 3 inches possible.
Monday
Partly sunny, with a high near 23. Wind chill values as low as -2. West southwest wind 11 to 16 mph, with gusts as high as 22 mph.
Monday Night
A 50 percent chance of snow. Cloudy, with a temperature rising to around 26 by 5am. West southwest wind 14 to 21 mph, with gusts as high as 31 mph. New snow accumulation of less than a half inch possible.
Tuesday
Snow likely. Cloudy, with a high near 26. Breezy, with a west wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow. Low around 23. Breezy, with a west wind 14 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Wednesday
Snow. High near 29. Breezy. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 26. Breezy. New snow accumulation of less than one inch possible.
Thursday
A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 28. Breezy.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 18.
Saturday
Mostly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 25.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles NNW Mackay ID
 44.1°N 113.78°W (Elev. 10531 ft)
4:31 pm MST Dec 7, 2025
6pm MST Dec 7, 2025-6pm MST Dec 14, 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