Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

43°F

6°C

Humidity 76%
Wind Speed S 10 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 29 Jun 11:15 AM MDT
Extended Forecast for

2 Miles S Mammoth Hot Springs WY

  • Today

    Today: Rain and snow showers, becoming all rain after 2pm. Some thunder is also possible.  Snow level 8000 feet rising to 9800 feet in the afternoon. High near 48. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 29 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 48 °F

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Scattered showers and thunderstorms before midnight, then isolated showers after 1am.  Mostly cloudy, with a low around 38. Breezy, with a southwest wind 8 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.

    Low: 38 °F

    Scattered
    Showers and
    Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. Southwest wind 8 to 13 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. South wind 5 to 13 mph.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 62. Light south wind becoming southwest 8 to 13 mph in the morning.

    High: 62 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 38. Southwest wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 23 mph.

    Low: 38 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Breezy, with a south southeast wind 6 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph.

    High: 65 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Rain and snow showers, becoming all rain after 2pm. Some thunder is also possible. Snow level 8000 feet rising to 9800 feet in the afternoon. High near 48. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Scattered showers and thunderstorms before midnight, then isolated showers after 1am. Mostly cloudy, with a low around 38. Breezy, with a southwest wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 60. Southwest wind 8 to 13 mph.
Tuesday Night
Partly cloudy, with a low around 37. South wind 5 to 13 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 62. Light south wind becoming southwest 8 to 13 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 38. Southwest wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 23 mph.
Thursday
Mostly sunny, with a high near 65. Breezy, with a south southeast wind 6 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 40.
Friday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 65.
Friday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 41.
Independence Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Mammoth Hot Springs WY
 44.94°N 110.71°W (Elev. 7172 ft)
11:48 am MDT Jun 29, 2026
11am MDT Jun 29, 2026-6pm MDT Jul 5, 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