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

Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

30°F

-1°C

Humidity 48%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 12°F (-11°C)
Visibility NA
Wind Chill24°F (-4°C)
Last update 23 Feb 05:15 AM MST
Extended Forecast for

Mammoth WY

Winter Storm Warning February 24, 05:00am until February 25, 05:00pm
Click here for hazard details and duration
Winter Storm Warning

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 43. South wind 6 to 10 mph, with gusts as high as 26 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Snow showers likely, mainly after 4am. Mostly cloudy, with a low around 33. Southeast wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Tuesday

    Tuesday: Snow showers before 11am, then rain and snow showers between 11am and 2pm, then rain showers after 2pm. Snow level rising to 6500 feet in the afternoon. High near 42. Southwest wind around 11 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Showers. Snow level 6500 feet. Low around 34. Southwest wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Showers

  • Wednesday

    Wednesday: Snow showers likely, mainly before 11am. Mostly sunny, with a high near 41. Breezy, with a west wind 15 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Breezy. Snow
    Showers
    Likely then
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 34 mph.

    High: 40 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 25. Breezy.

    Low: 25 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: A 20 percent chance of snow showers after 11am. Sunny, with a high near 43. Breezy.

    High: 43 °F

    Slight Chance
    Snow Showers
    and Breezy

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 43. South wind 6 to 10 mph, with gusts as high as 26 mph.
Tonight
Snow showers likely, mainly after 4am. Mostly cloudy, with a low around 33. Southeast wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday
Snow showers before 11am, then rain and snow showers between 11am and 2pm, then rain showers after 2pm. Snow level rising to 6500 feet in the afternoon. High near 42. Southwest wind around 11 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Showers. Snow level 6500 feet. Low around 34. Southwest wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Snow showers likely, mainly before 11am. Mostly sunny, with a high near 41. Breezy, with a west wind 15 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around 20. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 40. Breezy, with a south southwest wind 10 to 17 mph, with gusts as high as 34 mph.
Thursday Night
Mostly clear, with a low around 25. Breezy.
Friday
A 20 percent chance of snow showers after 11am. Sunny, with a high near 43. Breezy.
Friday Night
A 30 percent chance of snow showers. Partly cloudy, with a low around 26. Breezy.
Saturday
A slight chance of snow showers. Mostly sunny, with a high near 42.
Saturday Night
A slight chance of snow showers. Partly cloudy, with a low around 24.
Sunday
A slight chance of snow showers. Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
5:47 am MST Feb 23, 2026
Forecast Valid:
6am MST Feb 23, 2026-6pm MST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation