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

23°F

-5°C

Humidity 70%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 15°F (-9°C)
Visibility NA
Wind Chill17°F (-8°C)
Last update 04 Dec 01:15 AM MST
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Mostly cloudy, with a low around 18. South wind around 7 mph.

    Low: 18 °F

    Mostly Cloudy

  • Thursday

    Thursday: Snow showers likely, mainly after 2pm. Increasing clouds, with a high near 29. South wind 6 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Slight Chance
    Snow Showers
    then Snow
    Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers. Low around 19. South wind 5 to 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 19 °F

    Snow Showers

  • Friday

    Friday: Snow showers. High near 35. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Showers

  • Friday Night

    Friday Night: Snow showers. Low around 28. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Snow Showers

  • Saturday

    Saturday: Snow showers likely. Mostly cloudy, with a high near 38. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 38 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 21. West southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: A 30 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 35.

    High: 35 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 18. South wind around 7 mph.
Thursday
Snow showers likely, mainly after 2pm. Increasing clouds, with a high near 29. South wind 6 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow showers. Low around 19. South wind 5 to 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday
Snow showers. High near 35. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
Snow showers. Low around 28. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Snow showers likely. Mostly cloudy, with a high near 38. West 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, mainly before 11pm. Mostly cloudy, with a low around 21. West southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
A 30 percent chance of snow showers, mainly after 11am. Partly sunny, with a high near 35.
Sunday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 27.
Monday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 39.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 32.
Tuesday
A chance of rain and snow showers. Snow level 5700 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 44.
Tuesday Night
A chance of rain and snow showers. Snow level 6200 feet. Mostly cloudy, with a low around 32.
Wednesday
Rain and snow showers likely. Snow level 5800 feet rising to 6500 feet in the afternoon. Mostly cloudy, with a high near 45.
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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:
1:01 am MST Dec 4, 2025
Forecast Valid:
2am MST Dec 4, 2025-6pm MST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation