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 >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

62°F

17°C

Humidity 21%
Wind Speed SSE 7 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 20 Mar 11:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Mostly sunny, with a high near 68. Breezy, with a southwest wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 68 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 43. South southwest wind 8 to 13 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 3pm.  Increasing clouds, with a high near 66. Southeast wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 28 mph.

    High: 66 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 10 mph, with gusts as high as 23 mph.  Chance of precipitation is 30%.

    Low: 35 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 56. West southwest wind 5 to 11 mph, with gusts as high as 25 mph.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. West southwest wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 25 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57. South southwest wind 6 to 9 mph, with gusts as high as 22 mph.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 68. Breezy, with a southwest wind 9 to 17 mph, with gusts as high as 26 mph.
Tonight
Partly cloudy, with a low around 43. South southwest wind 8 to 13 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 66. Southeast wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 35. Northwest wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 56. West southwest wind 5 to 11 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 35. West southwest wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 25 mph.
Monday
Partly sunny, with a high near 57. South southwest wind 6 to 9 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 63. Breezy.
Wednesday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
11:33 am MDT Mar 20, 2026
11am MDT Mar 20, 2026-6pm MDT Mar 26, 2026
 
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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