Heavy Rainfall for the Mid-Atlantic; Heat and Wildfire Concerns for the West

Slow moving showers and thunderstorms may result in flash flooding for portions of the mid-Atlantic region today into tonight. Meanwhile, excessive heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue for the interior Northwest with dry and breezy conditions. Watching the tropics across the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

75°F

24°C

Humidity 25%
Wind Speed SSW 7 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 14 Jul 06:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Mostly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light south southwest  after midnight.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  High near 79. Light and variable wind becoming west northwest 5 to 9 mph in the morning.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am.  Low around 50. North northwest wind 6 to 8 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon.  Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 5 to 8 mph.  Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Northwest wind 5 to 8 mph becoming southeast after midnight.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. South southeast wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. South wind 5 to 9 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon.  Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

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

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light south southwest after midnight.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 79. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 50. North northwest wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 48. Northwest wind 5 to 8 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 85. South southeast wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Mostly clear, with a low around 51. South wind 5 to 9 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 52.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 53.
Monday
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)
5:28 pm MDT Jul 14, 2025
6pm MDT Jul 14, 2025-6pm MDT Jul 21, 2025
 
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Additional Resources

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