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

Snow Squalls in the Northeast U.S. on Thursday; Heavy Rain Along the Gulf Coast

An arctic cold front will move through the Great Lakes and Northeast on Thursday, bringing moderate to heavy snow, strong winds, and possible whiteout conditions through Thursday afternoon. A storm system interacting with Gulf moisture will bring moderate to heavy rainfall to the western and central Gulf Coast on Thursday. Isolated instances of flash flooding will be possible. 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 64%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 15°F (-9°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 03 Dec 07:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Partly cloudy, with a low around 19. South wind around 7 mph.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Snow showers likely, mainly after 4pm. Mostly cloudy, with a high near 28. South southwest wind 6 to 11 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 28 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 23. South southwest wind 7 to 9 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 35. Southwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: Snow showers. Low around 26. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Snow Showers
    then Snow
    Showers
    Likely

  • Saturday

    Saturday: Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 37. West southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 37 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 21. West southwest wind around 9 mph.

    Low: 21 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: A 20 percent chance of snow showers. Partly sunny, with a high near 35.

    High: 35 °F

    Slight Chance
    Snow Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 19. South wind around 7 mph.
Thursday
Snow showers likely, mainly after 4pm. Mostly cloudy, with a high near 28. South southwest wind 6 to 11 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow showers likely, mainly before 11pm. Mostly cloudy, with a low around 23. South southwest wind 7 to 9 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 35. Southwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
Snow showers. Low around 26. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 37. West southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 21. West southwest wind around 9 mph.
Sunday
A 20 percent chance of snow showers. Partly sunny, with a high near 35.
Sunday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 28.
Monday
A 20 percent chance of snow showers before 11am. Partly sunny, with a high near 40.
Monday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 31.
Tuesday
A chance of rain and snow showers. Snow level 6100 feet. Mostly cloudy, with a high near 43.
Tuesday Night
A chance of rain and snow showers. Snow level 6300 feet lowering to 5800 feet after midnight . Mostly cloudy, with a low around 30.
Wednesday
A chance of rain and snow showers. Snow level 5900 feet. Mostly cloudy, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
6:01 pm MST Dec 3, 2025
Forecast Valid:
7pm MST Dec 3, 2025-6pm MST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation