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

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

42°F

6°C

Humidity 51%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 14 Apr 08:15 PM MDT
Extended Forecast for

Mammoth WY

Winter Storm Watch April 15, 06:00pm until April 17, 06:00am
Click here for hazard details and duration
Winter Storm Watch

  • Tonight

    Tonight: Partly cloudy, with a low around 35. South wind 10 to 13 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain and snow showers likely, becoming all rain after 3pm. Snow level rising to 7400 feet in the afternoon. Partly sunny, with a high near 50. Breezy, with a south southwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 50 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Snow level 7500 feet lowering to 5700 feet after midnight . Low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 39. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 39 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 21 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Friday

    Friday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 38. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 38 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 19. Northwest wind 5 to 9 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.

    Low: 19 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. South wind 10 to 13 mph, with gusts as high as 25 mph.
Wednesday
Rain and snow showers likely, becoming all rain after 3pm. Snow level rising to 7400 feet in the afternoon. Partly sunny, with a high near 50. Breezy, with a south southwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Snow level 7500 feet lowering to 5700 feet after midnight . Low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers. Some thunder is also possible. High near 39. West wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 38. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 19. Northwest wind 5 to 9 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 64.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 38.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
9:02 pm MDT Apr 14, 2026
Forecast Valid:
9pm MDT Apr 14, 2026-6pm MDT Apr 21, 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