Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

26°F

-3°C

Humidity 80%
Wind Speed W 3 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 11 Feb 11:15 PM MST
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Partly cloudy, with a low around 27. Light south southeast wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 44. South southeast wind 3 to 6 mph.

    High: 44 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. South southeast wind around 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41. South southwest wind around 7 mph.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27. South wind around 7 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 41. South southwest wind 8 to 10 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. South wind around 9 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow showers before 11am, then a chance of rain and snow showers.  Partly sunny, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before 11pm, then a slight chance of snow showers.  Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 27. Light south southeast wind.
Thursday
Sunny, with a high near 44. South southeast wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 27. South southeast wind around 6 mph.
Friday
Mostly sunny, with a high near 41. South southwest wind around 7 mph.
Friday Night
Mostly cloudy, with a low around 27. South wind around 7 mph.
Saturday
Mostly cloudy, with a high near 41. South southwest wind 8 to 10 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 31. South wind around 9 mph, with gusts as high as 22 mph.
Sunday
A slight chance of snow showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow showers before 11pm, then a slight chance of snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Washington's Birthday
A slight chance of snow showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Monday Night
Rain and snow showers likely. Mostly cloudy, with a low around 33.
Tuesday
Snow showers likely. Mostly cloudy, with a high near 40. Breezy.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 24.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
11:31 pm MST Feb 11, 2026
12am MST Feb 12, 2026-6pm MST Feb 18, 2026
 
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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