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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

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 54%
Wind Speed SSW 8 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 17 Mar 03:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Partly sunny, with a high near 56. Southwest wind around 9 mph.

    High: 56 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South southwest wind 6 to 8 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 62. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 62 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39. Southwest wind 7 to 10 mph.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. South southwest wind 7 to 11 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. Southwest wind 6 to 10 mph.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 67. Southwest wind 6 to 11 mph, with gusts as high as 28 mph.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 64. Breezy.

    High: 64 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Partly sunny, with a high near 56. Southwest wind around 9 mph.
Tonight
Mostly cloudy, with a low around 40. South southwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 62. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 39. Southwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 65. South southwest wind 7 to 11 mph.
Thursday Night
Partly cloudy, with a low around 40. Southwest wind 6 to 10 mph.
Friday
Mostly sunny, with a high near 67. Southwest wind 6 to 11 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 64. Breezy.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
A slight chance of showers. Sunny, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
A slight chance of showers. Mostly sunny, with a high near 57.
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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:
3:17 am MDT Mar 17, 2026
Forecast Valid:
4am MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation