Heavy Snow from the Midwest into the Great Lakes; Locally Heavy Rain in the Western Gulf Coast

A significant winter storm will produce a broad area of moderate to heavy snow from the Midwest through the western Great Lakes. Significant snow accumulations of 6-12 inches, and locally more than 1 foot, and gusty wind may cause hazardous travel conditions. Thunderstorms, some severe, and showers may produce locally heavy rain and isolated flash flooding along the western Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

12°F

-11°C

Humidity 66%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 3°F (-16°C)
Visibility NA
Wind Chill2°F (-17°C)
Last update 30 Nov 01:15 AM MST
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Cloudy, with a steady temperature around 15. East southeast wind around 5 mph becoming north northwest.

    Low: 15 °F

    Cloudy

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 31. Light north northwest wind becoming northwest 5 to 9 mph in the afternoon.

    High: 31 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 9. West northwest wind around 6 mph becoming south after midnight.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 31. Wind chill values as low as zero. South southwest wind 5 to 8 mph.

    High: 31 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 30 percent chance of snow showers after 11pm.  Mostly cloudy, with a low around 21. South southwest wind around 10 mph.

    Low: 21 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: Snow showers likely.  Mostly cloudy, with a high near 32. South southwest wind 5 to 9 mph.  Chance of precipitation is 70%.

    High: 32 °F

    Snow Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow showers, mainly before 11pm.  Mostly cloudy, with a low around 17. North northwest wind around 6 mph.

    Low: 17 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Overnight
Cloudy, with a steady temperature around 15. East southeast wind around 5 mph becoming north northwest.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 31. Light north northwest wind becoming northwest 5 to 9 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 9. West northwest wind around 6 mph becoming south after midnight.
Monday
Increasing clouds, with a high near 31. Wind chill values as low as zero. South southwest wind 5 to 8 mph.
Monday Night
A 30 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 21. South southwest wind around 10 mph.
Tuesday
Snow showers likely. Mostly cloudy, with a high near 32. South southwest wind 5 to 9 mph. Chance of precipitation is 70%.
Tuesday Night
A 40 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 17. North northwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 12.
Thursday
A 20 percent chance of snow showers after 11am. Partly sunny, with a high near 31.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 22.
Friday
A chance of snow showers. Mostly cloudy, with a high near 34.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 25.
Saturday
Snow showers likely. Mostly cloudy, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
1:47 am MST Nov 30, 2025
1am MST Nov 30, 2025-6pm MST Dec 6, 2025
 
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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