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

52°F

11°C

Humidity 45%
Wind Speed SW 6 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 22 Apr 03:15 AM MDT
Extended Forecast for

Mammoth WY

Winter Weather Advisory April 22, 12:00pm until April 23, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 41. Southeast wind around 8 mph.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of rain showers before 4pm, then rain and snow showers. Some thunder is also possible. High near 51. Breezy, with a southeast wind 9 to 14 mph becoming south southwest 16 to 21 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 51 °F

    Breezy.
    Chance
    Showers then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow showers, possibly mixed with rain, becoming all snow after 2am. Some thunder is also possible. Snow level 7000 feet lowering to 5700 feet after midnight . Low around 35. Breezy, with a southwest wind 9 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 46. West wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 46 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers, mainly before midnight. Low around 23. Northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow Showers
    then Chance
    Snow Showers

  • Friday

    Friday: Snow showers. Some thunder is also possible. High near 39. West southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 39 °F

    Snow Showers

  • Friday Night

    Friday Night: A 40 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 20. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 20 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: A 40 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 46.

    High: 46 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 41. Southeast wind around 8 mph.
Wednesday
A chance of rain showers before 4pm, then rain and snow showers. Some thunder is also possible. High near 51. Breezy, with a southeast wind 9 to 14 mph becoming south southwest 16 to 21 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
Snow showers, possibly mixed with rain, becoming all snow after 2am. Some thunder is also possible. Snow level 7000 feet lowering to 5700 feet after midnight . Low around 35. Breezy, with a southwest wind 9 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Snow showers. Some thunder is also possible. High near 46. West wind 8 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday Night
Snow showers, mainly before midnight. Low around 23. Northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow showers. Some thunder is also possible. High near 39. West southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Friday Night
A 40 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 20. Northwest wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Saturday
A 40 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 46.
Saturday Night
A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 27.
Sunday
A chance of snow showers before 3pm, then a chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 47. Chance of precipitation is 50%.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 28.
Monday
A chance of rain and snow showers. Some thunder is also possible. Partly sunny, with a high near 49.
Monday Night
A slight chance of rain and snow showers. Snow level 5900 feet. Mostly cloudy, with a low around 30.
Tuesday
A chance of showers and thunderstorms. Snow level rising to 6600 feet in the afternoon. Mostly sunny, with a high near 53.
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:
3:17 am MDT Apr 22, 2026
Forecast Valid:
3am MDT Apr 22, 2026-6pm MDT Apr 28, 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