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

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

57°F

14°C

Humidity 14%
Wind Speed WSW 9 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Last update 09 Apr 02:15 PM MDT
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 56. Northwest wind 7 to 9 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 34. Northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Snow level 5900 feet rising to 10000 feet in the afternoon. Mostly sunny, with a high near 65. East southeast wind 5 to 9 mph.

    High: 65 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly before 10pm. Partly cloudy, with a low around 42. South wind around 7 mph.

    Low: 42 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 63. Breezy, with a south southwest wind 7 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.

    High: 63 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 39. South southwest wind 6 to 14 mph, with gusts as high as 30 mph.

    Low: 39 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 58. Breezy, with a south southwest wind 6 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 58 °F

    Mostly Sunny
    then Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.

    Low: 37 °F

    Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Monday

    Monday: Rain likely, possibly mixed with snow showers, mainly after noon. Some thunder is also possible. Snow level 6300 feet rising to 6800 feet in the afternoon. Mostly sunny, with a high near 52. Chance of precipitation is 70%.

    High: 52 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 56. Northwest wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 34. Northwest wind 5 to 9 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Snow level 5900 feet rising to 10000 feet in the afternoon. Mostly sunny, with a high near 65. East southeast wind 5 to 9 mph.
Friday Night
A 30 percent chance of showers, mainly before 10pm. Partly cloudy, with a low around 42. South wind around 7 mph.
Saturday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 63. Breezy, with a south southwest wind 7 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 39. South southwest wind 6 to 14 mph, with gusts as high as 30 mph.
Sunday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 58. Breezy, with a south southwest wind 6 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Sunday Night
A chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.
Monday
Rain likely, possibly mixed with snow showers, mainly after noon. Some thunder is also possible. Snow level 6300 feet rising to 6800 feet in the afternoon. Mostly sunny, with a high near 52. Chance of precipitation is 70%.
Monday Night
Rain showers likely before midnight, then a chance of rain and snow showers. Snow level 7000 feet lowering to 6300 feet after midnight . Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow showers. Snow level 6100 feet rising to 6600 feet in the afternoon. Partly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A chance of rain and snow showers. Snow level rising to 6600 feet in the afternoon. Partly sunny, with a high near 49. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
2:18 pm MDT Apr 9, 2026
Forecast Valid:
2pm MDT Apr 9, 2026-6pm MDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation