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Tropical Depression Nine in the Gulf of America; California October Heat Wave Continues

Tropical Depression Nine is forecast to track toward the central U.S. Gulf Coast while strengthening into a tropical storm by early Wednesday and a hurricane on Thursday. Stay tuned to forecast updates. Much higher than typical October temperatures will continue across much of California through midweek. Temperatures are forecast to gradually cool beginning Thursday in Coastal California. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

49°F

9°C

Humidity 42%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill46°F (8°C)
Last update 07 Oct 02:15 AM MDT
Extended Forecast for

Mammoth Hot Springs WY

  • Overnight

    Overnight: Mostly clear, with a low around 42. South wind around 5 mph.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. West northwest wind around 5 mph becoming light and variable after midnight.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 73. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. South wind 5 to 8 mph.

    Low: 41 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 71. Breezy, with a south wind 8 to 17 mph, with gusts as high as 31 mph.

    High: 71 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. South wind 9 to 13 mph, with gusts as high as 28 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 64. Breezy.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Rain showers before 3am, then rain and snow showers. Some thunder is also possible. Low around 37. Chance of precipitation is 90%.

    Low: 37 °F

    Showers
    Likely then
    Rain/Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 42. South wind around 5 mph.
Wednesday
Sunny, with a high near 76. Light and variable wind becoming west around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 40. West northwest wind around 5 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 73. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 41. South wind 5 to 8 mph.
Friday
Sunny, with a high near 71. Breezy, with a south wind 8 to 17 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 43. South wind 9 to 13 mph, with gusts as high as 28 mph.
Saturday
A 40 percent chance of showers, mainly after noon. Partly sunny, with a high near 64. Breezy.
Saturday Night
Rain showers before 3am, then rain and snow showers. Some thunder is also possible. Low around 37. Chance of precipitation is 90%.
Sunday
Rain and snow showers. High near 48. Chance of precipitation is 80%.
Sunday Night
Rain and snow showers. Mostly cloudy, with a low around 32.
Columbus Day
A chance of rain and snow showers. Mostly cloudy, with a high near 49.
Monday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 31.
Tuesday
A slight chance of rain and snow showers. Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.96°N 110.69°W (Elev. 6106 ft)
Last Update:
12:31 am MDT Oct 7, 2026
Forecast Valid:
2am MDT Oct 7, 2026-6pm MDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation