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

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into New Year's Day. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

29°F

-2°C

Humidity 63%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 30 Dec 06:15 PM MST
Extended Forecast for

5 Miles ESE Mount Holmes WY

  • Tonight

    Tonight: Mostly clear, with a low around 8. Wind chill values as low as -5. South wind around 8 mph.

    Low: 8 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35. Wind chill values as low as -5. South wind 7 to 9 mph.

    High: 35 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. South wind around 7 mph.

    Low: 15 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 31. South southwest wind 6 to 8 mph.

    High: 31 °F

    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 24. South southwest wind around 7 mph.

    Low: 24 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 30 percent chance of snow showers. Mostly cloudy, with a high near 33. Southwest wind 7 to 9 mph.

    High: 33 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 29. South southwest wind around 9 mph.

    Low: 29 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: A 40 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 35.

    High: 35 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 8. Wind chill values as low as -5. South wind around 8 mph.
Wednesday
Mostly sunny, with a high near 35. Wind chill values as low as -5. South wind 7 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 15. South wind around 7 mph.
New Year's Day
A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 31. South southwest wind 6 to 8 mph.
Thursday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 24. South southwest wind around 7 mph.
Friday
A 30 percent chance of snow showers. Mostly cloudy, with a high near 33. Southwest wind 7 to 9 mph.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 29. South southwest wind around 9 mph.
Saturday
A 40 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 35.
Saturday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 21.
Sunday
A 30 percent chance of snow showers. Partly sunny, with a high near 29.
Sunday Night
A slight chance of snow showers. Mostly cloudy, with a low around 19.
Monday
A chance of snow showers. Partly sunny, with a high near 29.
Monday Night
A slight chance of snow showers. Mostly cloudy, with a low around 17.
Tuesday
A chance of snow showers. Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Mount Holmes WY
 44.81°N 110.75°W (Elev. 7641 ft)
Last Update:
5:33 pm MST Dec 30, 2025
Forecast Valid:
6pm MST Dec 30, 2025-6pm MST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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