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

Snow Squalls from the Upper Midwest to Great Lakes; High Winds in the Northern and Central Plains

An Arctic front will bring widespread snow squalls through Friday from the Upper Midwest to the Ohio Valley. Heavy snow rates and strong winds will lead to near-zero visibility and dangerous travel conditions. High winds will continue across the northern and central High Plains through Friday, with wind gusts above 60 mph likely, leading to hazardous travel conditions. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

27°F

-3°C

Humidity 52%
Wind Speed NW 9 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill18°F (-8°C)
Last update 15 Jan 10:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Partly cloudy, with a low around 10. Wind chill values as low as zero. North northwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 27. Wind chill values as low as -5. Northwest wind 8 to 11 mph.

    High: 27 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 15. Northwest wind around 7 mph.

    Low: 15 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 39. West northwest wind around 5 mph becoming calm.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 16. South wind around 6 mph.

    Low: 16 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 37. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 37 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13. West northwest wind 3 to 5 mph.

    Low: 13 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 10. Wind chill values as low as zero. North northwest wind around 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 27. Wind chill values as low as -5. Northwest wind 8 to 11 mph.
Friday Night
Mostly clear, with a low around 15. Northwest wind around 7 mph.
Saturday
Sunny, with a high near 39. West northwest wind around 5 mph becoming calm.
Saturday Night
Clear, with a low around 16. South wind around 6 mph.
Sunday
Sunny, with a high near 37. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 13. West northwest wind 3 to 5 mph.
M.L.King Day
Sunny, with a high near 36.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
A slight chance of snow showers. Mostly sunny, with a high near 37.
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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:
7:48 pm MST Jan 15, 2026
Forecast Valid:
10pm MST Jan 15, 2026-6pm MST Jan 22, 2026
 
Forecast Discussion
 
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