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

18°F

-8°C

Humidity 61%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 6°F (-14°C)
Visibility NA
Wind Chill11°F (-12°C)
Last update 30 Dec 04:15 AM MST
Extended Forecast for

5 Miles WNW Mount Holmes WY

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 24. West northwest wind around 6 mph becoming south southeast in the morning.

    High: 24 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 12. South wind around 7 mph.

    Low: 12 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 29. South southwest wind 6 to 9 mph.

    High: 29 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18. South wind around 7 mph.

    Low: 18 °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 26. South southwest wind 7 to 9 mph.

    High: 26 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of snow showers.  Cloudy, with a low around 24. South southwest wind around 9 mph.

    Low: 24 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 30 percent chance of snow showers.  Mostly cloudy, with a high near 30. South southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    High: 30 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after 11pm.  Cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: A 50 percent chance of snow showers.  Mostly cloudy, with a high near 29. Breezy.

    High: 29 °F

    Chance Snow
    Showers and
    Breezy

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 24. West northwest wind around 6 mph becoming south southeast in the morning.
Tonight
Mostly clear, with a low around 12. South wind around 7 mph.
Wednesday
Increasing clouds, with a high near 29. South southwest wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 18. South wind around 7 mph.
New Year's Day
A 30 percent chance of snow showers after 11am. Mostly cloudy, with a high near 26. South southwest wind 7 to 9 mph.
Thursday Night
A 40 percent chance of snow showers. Cloudy, with a low around 24. South southwest wind around 9 mph.
Friday
A 30 percent chance of snow showers. Mostly cloudy, with a high near 30. South southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Friday Night
A 20 percent chance of snow showers after 11pm. Cloudy, with a low around 28.
Saturday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 29. Breezy.
Saturday Night
A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 21.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 24.
Sunday Night
Mostly cloudy, with a low around 17.
Monday
A slight chance of snow showers. Mostly cloudy, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Mount Holmes WY
 44.83°N 110.94°W (Elev. 8369 ft)
5:32 am MST Dec 30, 2025
6am MST Dec 30, 2025-6pm MST Jan 5, 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