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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

34°F

1°C

Humidity 80%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 22 Mar 03:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Sunny, with a high near 55. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. West southwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 22 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 61. South southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 61 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. South wind 5 to 10 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 60. South southwest wind 6 to 14 mph, with gusts as high as 29 mph.

    High: 60 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 45. Southwest wind 8 to 14 mph, with gusts as high as 29 mph.

    Low: 45 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. 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 37 mph.

    High: 64 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    T-storms then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 55. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Tonight
Increasing clouds, with a low around 38. West southwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 22 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 61. South southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 40. South wind 5 to 10 mph, with gusts as high as 22 mph.
Tuesday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 60. South southwest wind 6 to 14 mph, with gusts as high as 29 mph.
Tuesday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 45. Southwest wind 8 to 14 mph, with gusts as high as 29 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. 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 37 mph.
Wednesday Night
A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Mostly clear, with a low around 28.
Friday
Sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 61.
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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:
3:01 am MDT Mar 22, 2026
Forecast Valid:
4am MDT Mar 22, 2026-6pm MDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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