National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

18°C

64°F

Humidity 57%
Wind Speed NNW 15 MPH
Barometer NA
Dewpoint 9°C (48°F)
Visibility NA
Last update 15 Jul 03:15 PM MDT
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 23. Northwest wind 13 to 16 km/h. Chance of precipitation is 90%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 23 °C

    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 5am. Low around 8. Northwest wind 11 to 14 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 8 °C

    Showers then
    Chance
    Showers

  • 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 24. North northwest wind 8 to 11 km/h. Chance of precipitation is 20%.

    High: 24 °C

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 9. Northwest wind 8 to 11 km/h becoming south southeast in the evening.

    Low: 9 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 30. South southeast wind 10 to 15 km/h becoming west southwest 16 to 21 km/h in the afternoon. Winds could gust as high as 39 km/h.

    High: 30 °C

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 11. West wind 11 to 16 km/h becoming south southwest 5 to 10 km/h after midnight. Winds could gust as high as 37 km/h.

    Low: 11 °C

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 30. South southeast wind 5 to 14 km/h becoming west in the afternoon.

    High: 30 °C

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 11.

    Low: 11 °C

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 31.

    High: 31 °C

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 23. Northwest wind 13 to 16 km/h. Chance of precipitation is 90%. New rainfall amounts between 2.5 and 5 mm possible.
Tonight
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 5am. Low around 8. Northwest wind 11 to 14 km/h. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.
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 24. North northwest wind 8 to 11 km/h. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 9. Northwest wind 8 to 11 km/h becoming south southeast in the evening.
Thursday
Sunny, with a high near 30. South southeast wind 10 to 15 km/h becoming west southwest 16 to 21 km/h in the afternoon. Winds could gust as high as 39 km/h.
Thursday Night
Mostly clear, with a low around 11. West wind 11 to 16 km/h becoming south southwest 5 to 10 km/h after midnight. Winds could gust as high as 37 km/h.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 30. South southeast wind 5 to 14 km/h becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 11.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 30.
Sunday Night
Partly cloudy, with a low around 11.
Monday
A slight chance of showers and thunderstorms. Sunny, with a high near 28.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 m)
Last Update:
2:13 pm MDT Jul 15, 2025
Forecast Valid:
3pm MDT Jul 15, 2025-6pm MDT Jul 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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