Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Challis - Challis Airport (KLLJ)

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

Overcast

48°F

9°C

Humidity 53%
Wind Speed SSE 13 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 09 Dec 01:20 AM MST
Extended Forecast for

13 Miles NNW Mackay ID

  • Overnight

    Overnight: A 50 percent chance of snow, mainly after 4am.  Mostly cloudy, with a low around 21. Breezy, with a west wind around 22 mph, with gusts as high as 39 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow
    and Breezy

  • Tuesday

    Tuesday: Snow likely, mainly between 7am and 8am.  Mostly cloudy, with a temperature rising to near 28 by noon, then falling to around 23 during the remainder of the day. Breezy, with a west wind 15 to 23 mph, with gusts as high as 40 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    High: 28 °F

    Snow Likely
    and Breezy

  • Tuesday Night

    Tuesday Night: Snow likely, mainly between 11pm and midnight.  Mostly cloudy, with a temperature rising to around 29 by 5am. West wind 13 to 21 mph, with gusts as high as 36 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 23 °F

    Snow Likely

  • Wednesday

    Wednesday: A 30 percent chance of snow before 11am.  Mostly cloudy, with a high near 31. Breezy, with a west wind 18 to 22 mph, with gusts as high as 37 mph.  New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    and Breezy
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 23. West wind 16 to 21 mph, with gusts as high as 32 mph.

    Low: 23 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °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 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a low around 21. Breezy, with a west wind around 22 mph, with gusts as high as 39 mph. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Snow likely, mainly between 7am and 8am. Mostly cloudy, with a temperature rising to near 28 by noon, then falling to around 23 during the remainder of the day. Breezy, with a west wind 15 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow likely, mainly between 11pm and midnight. Mostly cloudy, with a temperature rising to around 29 by 5am. West wind 13 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 30 percent chance of snow before 11am. Mostly cloudy, with a high near 31. Breezy, with a west wind 18 to 22 mph, with gusts as high as 37 mph. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly cloudy, with a low around 23. West wind 16 to 21 mph, with gusts as high as 32 mph.
Thursday
Mostly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 30.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 29.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mackay ID
 44.08°N 113.71°W (Elev. 10135 ft)
1:03 am MST Dec 9, 2025
1am MST Dec 9, 2025-6pm MST Dec 15, 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