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 42%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 20 Apr 08:15 AM MDT
Extended Forecast for

Mammoth Hot Springs WY

  • Today

    Today: Sunny, with a high near 66. Breezy, with a south southeast wind 7 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 66 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 39. Southwest wind 6 to 11 mph becoming southeast after midnight.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 26 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. South southeast wind 7 to 10 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 55. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.

    High: 55 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers before 9pm, then rain and snow showers. Snow level 6900 feet lowering to 6100 feet after midnight . Low around 35. Breezy, with a southwest wind 9 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.

    Low: 35 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers, possibly mixed with rain, becoming all snow after noon. Some thunder is also possible. High near 44. West wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 44 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.

    Low: 25 °F

    Snow Showers
    Likely

  • Friday

    Friday: A 50 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 41.

    High: 41 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Sunny, with a high near 66. Breezy, with a south southeast wind 7 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Tonight
Partly cloudy, with a low around 39. Southwest wind 6 to 11 mph becoming southeast after midnight.
Tuesday
Mostly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 41. South southeast wind 7 to 10 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 55. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Wednesday Night
Rain showers before 9pm, then rain and snow showers. Snow level 6900 feet lowering to 6100 feet after midnight . Low around 35. Breezy, with a southwest wind 9 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.
Thursday
Snow showers, possibly mixed with rain, becoming all snow after noon. Some thunder is also possible. High near 44. West wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Friday
A 50 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 41.
Friday Night
A 30 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 23.
Saturday
A slight chance of snow showers. Mostly sunny, with a high near 46.
Saturday Night
A slight chance of snow showers. Mostly cloudy, with a low around 24.
Sunday
A chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
8:46 am MDT Apr 20, 2026
Forecast Valid:
9am MDT Apr 20, 2026-6pm MDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation