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

37°F

3°C

Humidity 57%
Wind Speed SSW 11 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill29°F (-2°C)
Last update 13 Apr 11:15 AM MDT
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: A slight chance of snow showers before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Snow level rising to 6300 feet. Mostly cloudy, with a high near 49. Breezy, with a south southwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 49 °F

    Chance
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: A chance of rain and snow showers, mainly before 8pm. Snow level 6300 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 34. South southwest wind 9 to 14 mph becoming light south after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 52. Southwest wind 5 to 14 mph, with gusts as high as 29 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. South wind 9 to 14 mph, with gusts as high as 29 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before 9am, then rain showers likely. Snow level 5800 feet rising to 7200 feet in the afternoon. Mostly cloudy, with a high near 50. Breezy, with a south southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 50 °F

    Breezy.
    Slight Chance
    Rain/Snow
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers before midnight, then rain and snow showers. Some thunder is also possible. Snow level 7300 feet lowering to 5800 feet after midnight . Low around 33. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.

    Low: 33 °F

    Breezy.
    Showers then
    Rain/Snow

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 41. West southwest wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%.

    High: 41 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers, mainly before midnight. Low around 22. Chance of precipitation is 80%.

    Low: 22 °F

    Snow Showers
    then Chance
    Snow Showers

  • Friday

    Friday: A 50 percent chance of snow showers. Partly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    Showers

Detailed Forecast

This Afternoon
A slight chance of snow showers before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Snow level rising to 6300 feet. Mostly cloudy, with a high near 49. Breezy, with a south southwest wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Tonight
A chance of rain and snow showers, mainly before 8pm. Snow level 6300 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 34. South southwest wind 9 to 14 mph becoming light south after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday
Mostly sunny, with a high near 52. Southwest wind 5 to 14 mph, with gusts as high as 29 mph.
Tuesday Night
Partly cloudy, with a low around 35. South wind 9 to 14 mph, with gusts as high as 29 mph.
Wednesday
A slight chance of rain and snow showers before 9am, then rain showers likely. Snow level 5800 feet rising to 7200 feet in the afternoon. Mostly cloudy, with a high near 50. Breezy, with a south southwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Rain showers before midnight, then rain and snow showers. Some thunder is also possible. Snow level 7300 feet lowering to 5800 feet after midnight . Low around 33. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 90%.
Thursday
Snow showers. Some thunder is also possible. High near 41. West southwest wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%.
Thursday Night
Snow showers, mainly before midnight. Low around 22. Chance of precipitation is 80%.
Friday
A 50 percent chance of snow showers. Partly sunny, with a high near 40.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 21.
Saturday
Sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 56.
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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:
11:03 am MDT Apr 13, 2026
Forecast Valid:
12pm MDT Apr 13, 2026-6pm MDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation