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

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

NA

37°F

3°C

Humidity 71%
Wind Speed S 15 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 09 Dec 02:15 AM MST
Extended Forecast for

5 Miles N Mount Holmes WY

Winter Storm Warning until December 10, 05:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning until December 10, 05:00pm

    NOW until 5:00pm Wed

    Winter Storm Warning

  • Overnight

    Low: 27 °F

    Heavy Snow
    and Blowing
    Snow

  • Tuesday

    Tuesday: Snow, mainly before 2pm. The snow could be heavy at times.  Areas of blowing snow before 4pm. High near 31. Windy, with a west southwest wind 20 to 28 mph, with gusts as high as 47 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    High: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly after 1am. The snow could be heavy at times.  Low around 24. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 38 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Breezy.
    Chance Snow
    then Heavy
    Snow

  • Wednesday

    Wednesday: Snow, mainly before noon.  High near 33. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 43 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 33 °F

    Breezy. Snow
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly after 1am.  Mostly cloudy, with a low around 26. Windy, with a southwest wind 24 to 28 mph, with gusts as high as 46 mph.

    Low: 26 °F

    Chance Snow
    and Windy

  • Thursday

    Thursday: A 40 percent chance of snow.  Mostly cloudy, with a high near 30. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 39 mph.

    High: 30 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of snow.  Cloudy, with a low around 27. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 36 mph.

    Low: 27 °F

    Chance Snow
    and Breezy

  • Friday

    Friday: A 40 percent chance of snow.  Mostly cloudy, with a high near 29. Breezy.

    High: 29 °F

    Chance Snow
    and Breezy

Detailed Forecast

Overnight
Snow, mainly after 4am. The snow could be heavy at times. Widespread blowing snow, mainly after 5am. Steady temperature around 27. Windy, with a west southwest wind around 30 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.
Tuesday
Snow, mainly before 2pm. The snow could be heavy at times. Areas of blowing snow before 4pm. High near 31. Windy, with a west southwest wind 20 to 28 mph, with gusts as high as 47 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Tuesday Night
Snow, mainly after 1am. The snow could be heavy at times. Low around 24. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow, mainly before noon. High near 33. Breezy, with a southwest wind 21 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 26. Windy, with a southwest wind 24 to 28 mph, with gusts as high as 46 mph.
Thursday
A 40 percent chance of snow. Mostly cloudy, with a high near 30. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 39 mph.
Thursday Night
A 50 percent chance of snow. Cloudy, with a low around 27. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 36 mph.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 29. Breezy.
Friday Night
Mostly cloudy, with a low around 24. Breezy.
Saturday
Partly sunny, with a high near 27. Breezy.
Saturday Night
Mostly cloudy, with a low around 18. Breezy.
Sunday
Partly sunny, with a high near 27. Breezy.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 27. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Mount Holmes WY
 44.88°N 110.86°W (Elev. 8734 ft)
2:31 am MST Dec 9, 2025
3am MST Dec 9, 2025-6pm MST Dec 15, 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