Arctic Front Brings Winter Weather and Colder Temperatures to the Eastern U.S.

A series of cold fronts will bring heavy lake effect snow to the northern Great Lakes. The fronts will merge over the Ohio Valley and bring colder temperatures east of the Mississippi River later today into the end of the week. Additionally, wintry weather will develop over the Ohio Valley, Appalachians, and Northeast as rain switches over to snow tonight into Thursday morning. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

41°F

5°C

Humidity 50%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 14 Jan 04:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Mostly clear, with a low around 16. South wind around 7 mph.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 37. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 37 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 18. Northwest wind around 10 mph.

    Low: 18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 34. Northwest wind 3 to 8 mph.

    High: 34 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 17. West northwest wind 3 to 5 mph.

    Low: 17 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 41. Light west wind.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 17. South wind around 5 mph.

    Low: 17 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 16. South wind around 7 mph.
Thursday
Sunny, with a high near 37. Calm wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 18. Northwest wind around 10 mph.
Friday
Mostly sunny, with a high near 34. Northwest wind 3 to 8 mph.
Friday Night
Mostly clear, with a low around 17. West northwest wind 3 to 5 mph.
Saturday
Sunny, with a high near 41. Light west wind.
Saturday Night
Clear, with a low around 17. South wind around 5 mph.
Sunday
Sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 14.
M.L.King Day
Sunny, with a high near 39.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Mostly sunny, 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)
3:47 pm MST Jan 14, 2026
5pm MST Jan 14, 2026-6pm MST Jan 21, 2026
 
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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