Remnants of Arthur and Heavy Rainfall Across the South; Fire Weather Threat in the West

Life-threatening, potentially catastrophic flash flooding expected along the central Gulf Coast as the remnants of Arthur track across the area. Isolated brief tornadoes and damaging gusts remain possible overnight in the Southeast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts of the West Friday. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

64°F

18°C

Humidity 26%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 18 Jun 09:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Mostly clear, with a low around 43. Northwest wind around 5 mph becoming calm  after midnight.

    Low: 43 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 81. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 75. Calm wind becoming west southwest around 6 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then a slight chance of showers.  Low around 48. West wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon.  Mostly sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon.  Chance of precipitation is 60%.

    High: 73 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 45. North wind 3 to 5 mph.

    Low: 45 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 43. Northwest wind around 5 mph becoming calm after midnight.
Juneteenth
Partly sunny, with a high near 81. Calm wind becoming north northwest around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 51. Northwest wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 75. Calm wind becoming west southwest around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Low around 48. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 73. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45. North wind 3 to 5 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 82.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
10:16 pm MDT Jun 18, 2026
10pm MDT Jun 18, 2026-6pm MDT Jun 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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