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 Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

29°F

-2°C

Humidity 59%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill25°F (-4°C)
Last update 01 Jan 02:15 AM MST
Extended Forecast for

5 Miles ESE Mount Holmes WY

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 19. South wind around 9 mph.

    Low: 19 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Snow showers likely, mainly after 5pm. Mostly cloudy, with a high near 33. South wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Partly Sunny
    then Snow
    Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers. Patchy fog. Low around 25. South wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Snow Showers
    and Patchy
    Fog

  • Friday

    Friday: Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 32. Southwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 36. South southwest wind around 11 mph, with gusts as high as 25 mph.

    High: 36 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 25. South southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 33.

    High: 33 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 19. South wind around 9 mph.
New Year's Day
Snow showers likely, mainly after 5pm. Mostly cloudy, with a high near 33. South wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow showers. Patchy fog. Low around 25. South wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday
Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 32. Southwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
Mostly cloudy, with a low around 27. Southwest wind around 9 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, with a high near 36. South southwest wind around 11 mph, with gusts as high as 25 mph.
Saturday Night
A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 25. South southwest wind around 10 mph, with gusts as high as 21 mph.
Sunday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 33.
Sunday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 26.
Monday
Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 32. Chance of precipitation is 60%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 21.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
A slight chance of snow showers. Mostly cloudy, with a high near 27.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:31 am MST Jan 1, 2026
Forecast Valid:
2am MST Jan 1, 2026-6pm MST Jan 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation