Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

57°F

14°C

Humidity 80%
Wind Speed NW 12 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 15 Jul 06:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 5am.  Mostly cloudy, with a low around 46. Northwest wind 7 to 9 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm.  Mostly cloudy, then gradually becoming sunny, with a high near 75. North northwest wind 5 to 7 mph.  Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming south southeast in the evening.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. South southeast wind 6 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. West wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 23 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 86. Light and variable wind becoming west 5 to 9 mph in the morning.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. West wind around 7 mph becoming south southeast after midnight.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 5am. Mostly cloudy, with a low around 46. Northwest wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 75. North northwest wind 5 to 7 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming south southeast in the evening.
Thursday
Sunny, with a high near 86. South southeast wind 6 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Mostly clear, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming west 5 to 9 mph in the morning.
Friday Night
Partly cloudy, with a low around 52. West wind around 7 mph becoming south southeast after midnight.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 51.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 83.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
5:44 pm MDT Jul 15, 2025
7pm MDT Jul 15, 2025-6pm MDT Jul 22, 2025
 
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Additional Resources

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