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

40°F

4°C

Humidity 58%
Wind Speed SSE 5 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 05 Apr 09:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. West southwest wind around 6 mph becoming light and variable in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 60. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 60 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. West wind 5 to 7 mph becoming south after midnight.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 59. Breezy, with a west southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 59 °F

    Sunny then
    Slight Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a chance of snow showers after 3am. Snow level 8100 feet lowering to 5700 feet after midnight . Partly cloudy, with a low around 35. Breezy, with a west wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Chance
    Showers and
    Breezy then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of snow showers before noon, then a chance of rain and snow showers. Mostly sunny, with a high near 53. West wind 6 to 11 mph. Chance of precipitation is 30%.

    High: 53 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Snow level 6400 feet lowering to 5800 feet after midnight . Partly cloudy, with a low around 33. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A slight chance of rain and snow showers before noon, then a chance of rain showers. Snow level rising to 6800 feet in the afternoon. Mostly sunny, with a high near 54. Chance of precipitation is 30%.

    High: 54 °F

    Slight Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 37. West southwest wind around 6 mph becoming light and variable in the evening.
Monday
Partly sunny, with a high near 60. Light and variable wind becoming west southwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 38. West wind 5 to 7 mph becoming south after midnight.
Tuesday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 59. Breezy, with a west southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a chance of snow showers after 3am. Snow level 8100 feet lowering to 5700 feet after midnight . Partly cloudy, with a low around 35. Breezy, with a west wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of snow showers before noon, then a chance of rain and snow showers. Mostly sunny, with a high near 53. West wind 6 to 11 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Snow level 6400 feet lowering to 5800 feet after midnight . Partly cloudy, with a low around 33. Chance of precipitation is 20%.
Thursday
A slight chance of rain and snow showers before noon, then a chance of rain showers. Snow level rising to 6800 feet in the afternoon. Mostly sunny, with a high near 54. Chance of precipitation is 30%.
Thursday Night
A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Partly cloudy, with a low around 33. Chance of precipitation is 20%.
Friday
A chance of showers. Snow level 6700 feet rising to 8100 feet in the afternoon. Sunny, with a high near 60.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 36.
Saturday
A chance of showers. Mostly sunny, with a high near 62.
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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:
9:32 am MDT Apr 5, 2026
Forecast Valid:
9am MDT Apr 5, 2026-6pm MDT Apr 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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