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Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

41°F

5°C

Humidity 44%
Wind Speed S 8 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 19 Apr 11:15 PM MDT
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. South wind around 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: 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

  • Monday Night

    Monday Night: 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 25 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 41. South southeast wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 56. Breezy, with a southwest wind 9 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 70%.

    High: 56 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain showers before 3am, then rain and snow showers. Snow level 7100 feet lowering to 6100 feet after midnight . Low around 35. Breezy, with a southwest wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 35 °F

    Showers and
    Breezy then
    Rain/Snow

  • Thursday

    Thursday: Snow showers. High near 45. Chance of precipitation is 80%.

    High: 45 °F

    Snow Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. South wind around 7 mph.
Monday
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.
Monday Night
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 25 mph.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 41. South southeast wind 8 to 10 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 56. Breezy, with a southwest wind 9 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 70%.
Wednesday Night
Rain showers before 3am, then rain and snow showers. Snow level 7100 feet lowering to 6100 feet after midnight . Low around 35. Breezy, with a southwest wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Thursday
Snow showers. High near 45. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 25.
Friday
A 40 percent chance of snow showers. Some thunder is also possible. Partly sunny, with a high near 44.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 24.
Saturday
A chance of snow showers. Mostly sunny, with a high near 46.
Saturday Night
A slight chance of snow showers. Partly cloudy, with a low around 23.
Sunday
A slight chance of snow showers. Some thunder is also possible. Mostly sunny, with a high near 50.
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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:
11:47 pm MDT Apr 19, 2026
Forecast Valid:
12am MDT Apr 20, 2026-6pm MDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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