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

Tropical Moisture Brings Slight Risk of Excessive Rainfall to the Southwest; Strong to Locally Severe Storms on the Plains

Heavy rain and flash flooding are possible across portions of the Southwest through Friday, where Flood Watches are in effect. Strong to locally severe thunderstorms are possible today across portions of the Plains. A tropical wave is causing heavy rainfall in Puerto Rico and the Virgin Islands, which may cause urban and small stream flooding and landslides today. Read More >

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Clear

48°F

9°C

Humidity 49%
Wind Speed N 0 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 18 Sep 05:15 AM PDT
Extended Forecast for

8 Miles E Mammoth Lakes CA

  • Today

    Today: A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Chance
    Showers

  • Tonight

    Tonight: A 50 percent chance of showers. Mostly cloudy, with a low around 43. East wind 5 to 10 mph becoming light and variable in the evening.

    Low: 43 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 62. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 62 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.

    Low: 40 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after 11am. Mostly sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.

    High: 69 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. Southwest wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 11am. Mostly sunny, with a high near 70.

    High: 70 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 43. East wind 5 to 10 mph becoming light and variable in the evening.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 62. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 40. West wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers after 11am. Mostly sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 41. Southwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers after 11am. Mostly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
A chance of showers. Mostly sunny, with a high near 72.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 43.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles E Mammoth Lakes CA
 37.64°N 118.82°W (Elev. 7198 ft)
Last Update:
2:15 am PDT Sep 18, 2025
Forecast Valid:
5am PDT Sep 18, 2025-6pm PDT Sep 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation