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

Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

17°F

-8°C

Humidity 60%
Wind Speed S 5 MPH
Barometer NA
Dewpoint 6°F (-14°C)
Visibility NA
Wind Chill9°F (-13°C)
Last update 30 Dec 08:15 AM MST
Extended Forecast for

16 Miles W Gardiner MT

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 26. South wind 6 to 9 mph.

    High: 26 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 15. Southeast wind around 10 mph.

    Low: 15 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. South wind 9 to 11 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. South southwest wind around 7 mph.

    Low: 19 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 30 percent chance of snow showers after 11am. Mostly cloudy, with a high near 27. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 27 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 23. South southwest wind around 8 mph.

    Low: 23 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 20 percent chance of snow showers. Mostly cloudy, with a high near 29. South southwest wind 8 to 11 mph, with gusts as high as 24 mph.

    High: 29 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 30.

    High: 30 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 26. South wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 15. Southeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 30. South wind 9 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 19. South southwest wind around 7 mph.
New Year's Day
A 30 percent chance of snow showers after 11am. Mostly cloudy, with a high near 27. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday Night
A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 23. South southwest wind around 8 mph.
Friday
A 20 percent chance of snow showers. Mostly cloudy, with a high near 29. South southwest wind 8 to 11 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 27.
Saturday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 30.
Saturday Night
A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 18.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 25.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
A slight chance of snow showers. Partly sunny, with a high near 24.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W Gardiner MT
 45.06°N 111.04°W (Elev. 8474 ft)
Last Update:
8:33 am MST Dec 30, 2025
Forecast Valid:
8am MST Dec 30, 2025-6pm MST Jan 5, 2026
 
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