Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

42°F

6°C

Humidity 30%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 12°F (-11°C)
Visibility NA
Last update 09 Nov 07:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South southeast wind 7 to 9 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 54. Breezy, with a south wind 10 to 16 mph, with gusts as high as 22 mph.

    High: 54 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Monday Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 33. South southwest wind 7 to 11 mph.

    Low: 33 °F

    Decreasing
    Clouds

  • Veterans Day

    Veterans Day: Sunny, with a high near 54. Southwest wind 6 to 8 mph.

    High: 54 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. South wind around 8 mph.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55. South wind around 7 mph.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35. South wind 7 to 9 mph.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain and snow showers.  Mostly cloudy, with a low around 34. Chance of precipitation is 50%.

    Low: 34 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. South southeast wind 7 to 9 mph.
Monday
Increasing clouds, with a high near 54. Breezy, with a south wind 10 to 16 mph, with gusts as high as 22 mph.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 33. South southwest wind 7 to 11 mph.
Veterans Day
Sunny, with a high near 54. Southwest wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 33. South wind around 8 mph.
Wednesday
Partly sunny, with a high near 55. South wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 35. South wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Friday
Rain and snow showers likely, mainly before 11am. Snow level 6900 feet lowering to 6000 feet in the afternoon . Mostly cloudy, with a high near 41. Chance of precipitation is 60%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 23.
Saturday
A slight chance of snow showers. Partly sunny, with a high near 38.
Saturday Night
A slight chance of snow showers. Mostly cloudy, with a low around 25.
Sunday
A chance of rain and snow showers. Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
6:48 pm MST Nov 9, 2025
7pm MST Nov 9, 2025-6pm MST Nov 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database