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

49°F

9°C

Humidity 30%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 20 Mar 06:15 AM MDT
Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

  • Today

    Today: Sunny, with a high near 57. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. South wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after noon.  Partly sunny, with a high near 56. Breezy, with a south wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 56 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A chance of rain showers before midnight, then a slight chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am.  Snow level 9800 feet lowering to 7400 feet after midnight . Partly cloudy, with a low around 28. West wind 6 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 28 °F

    Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Sunday

    Sunday: Sunny, with a high near 47. West southwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 47 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. South wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47. South wind 7 to 11 mph, with gusts as high as 23 mph.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 57. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 36. South wind 9 to 13 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers after noon. Partly sunny, with a high near 56. Breezy, with a south wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of rain showers before midnight, then a slight chance of rain and snow showers between midnight and 3am, then a slight chance of snow showers after 3am. Snow level 9800 feet lowering to 7400 feet after midnight . Partly cloudy, with a low around 28. West wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
Sunny, with a high near 47. West southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 27. South wind 7 to 14 mph, with gusts as high as 21 mph.
Monday
Partly sunny, with a high near 47. South wind 7 to 11 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 37. Breezy.
Wednesday
A slight chance of showers. Sunny, with a high near 55. Breezy.
Wednesday Night
A chance of rain and snow showers. Snow level 9000 feet lowering to 7400 feet after midnight . Partly cloudy, with a low around 27. Breezy.
Thursday
A slight chance of snow showers. Sunny, with a high near 41. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mammoth Hot Springs WY
 44.89°N 110.74°W (Elev. 7402 ft)
5:17 am MDT Mar 20, 2026
6am 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