National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

Current conditions at

ZORTMAN BLM (ALDM8)

Lat: 47.91189°NLon: 108.50389°WElev: 3980.0ft.

NA

41°F

5°C

Humidity 57%
Wind Speed WSW 13 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 08 Dec 06:32 PM MST
Extended Forecast for

3 Miles WNW Zortman MT

Winter Weather Advisory December 8, 11:00pm until December 9, 02:00pm
High Wind Warning December 8, 11:00pm until December 9, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
High Wind Warning

  • Tonight

    Tonight: A 50 percent chance of rain, mainly after 9pm. Cloudy, with a temperature rising to around 40 by 5am. Very windy, with a west wind 26 to 36 mph increasing to 36 to 46 mph after midnight. Winds could gust as high as 60 mph.

    Low: 32 °F⇑

    Chance Rain
    and Very
    Windy

  • Tuesday

    Tuesday: Rain, snow, and sleet likely before 1pm, then a slight chance of snow between 1pm and 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a temperature falling to around 29 by 4pm. Very windy, with a west northwest wind 36 to 46 mph decreasing to 23 to 33 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 60%. Little or no snow and sleet accumulation expected.

    High: 39 °F⇓

    Wintry Mix
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 23. West northwest wind 11 to 16 mph becoming south southwest after midnight. Winds could gust as high as 24 mph.

    Low: 23 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Snow before 1pm, then snow likely, possibly mixed with rain between 1pm and 2pm, then rain likely after 2pm. High near 36. South wind 14 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 36 °F

    Snow then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain before 8pm, then rain and snow likely between 8pm and 2am, then snow likely after 2am. Cloudy, with a low around 21. Breezy, with a west wind around 22 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Rain/Snow
    Likely and
    Breezy

  • Thursday

    Thursday: Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 27. Breezy, with a north northwest wind 15 to 22 mph. Chance of precipitation is 70%. New snow accumulation of 4 to 8 inches possible.

    High: 27 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of snow. Mostly cloudy, with a low around -7. North northwest wind 14 to 17 mph. New snow accumulation of 1 to 3 inches possible.

    Low: -7 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after 11am. Mostly cloudy, with a high near 1. Northeast wind 8 to 13 mph becoming east southeast in the morning. Chance of precipitation is 60%.

    High: 1 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely, mainly before 11pm. The snow could be heavy at times. Cloudy, with a low around -4. East southeast wind 9 to 13 mph. Chance of precipitation is 60%.

    Low: -4 °F

    Heavy Snow

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly after 9pm. Cloudy, with a temperature rising to around 40 by 5am. Very windy, with a west wind 26 to 36 mph increasing to 36 to 46 mph after midnight. Winds could gust as high as 60 mph.
Tuesday
Rain, snow, and sleet likely before 1pm, then a slight chance of snow between 1pm and 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a temperature falling to around 29 by 4pm. Very windy, with a west northwest wind 36 to 46 mph decreasing to 23 to 33 mph in the afternoon. Winds could gust as high as 65 mph. Chance of precipitation is 60%. Little or no snow and sleet accumulation expected.
Tuesday Night
Increasing clouds, with a low around 23. West northwest wind 11 to 16 mph becoming south southwest after midnight. Winds could gust as high as 24 mph.
Wednesday
Snow before 1pm, then snow likely, possibly mixed with rain between 1pm and 2pm, then rain likely after 2pm. High near 36. South wind 14 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A chance of rain before 8pm, then rain and snow likely between 8pm and 2am, then snow likely after 2am. Cloudy, with a low around 21. Breezy, with a west wind around 22 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow likely. The snow could be heavy at times. Mostly cloudy, with a high near 27. Breezy, with a north northwest wind 15 to 22 mph. Chance of precipitation is 70%. New snow accumulation of 4 to 8 inches possible.
Thursday Night
A 50 percent chance of snow. Mostly cloudy, with a low around -7. North northwest wind 14 to 17 mph. New snow accumulation of 1 to 3 inches possible.
Friday
Snow likely, mainly after 11am. Mostly cloudy, with a high near 1. Northeast wind 8 to 13 mph becoming east southeast in the morning. Chance of precipitation is 60%.
Friday Night
Snow likely, mainly before 11pm. The snow could be heavy at times. Cloudy, with a low around -4. East southeast wind 9 to 13 mph. Chance of precipitation is 60%.
Saturday
A 40 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 5. Northeast wind 9 to 13 mph becoming west in the morning.
Saturday Night
Mostly cloudy, with a low around 0. South wind 10 to 15 mph.
Sunday
Partly sunny, with a high near 28.
Sunday Night
Partly cloudy, with a low around 14.
Monday
A slight chance of snow. Partly sunny, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Zortman MT
 47.93°N 108.59°W (Elev. 5400 ft)
Last Update:
4:31 pm MST Dec 8, 2025
Forecast Valid:
7pm MST Dec 8, 2025-6pm MST Dec 15, 2025
 
Forecast Discussion
 
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Additional Resources

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