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

Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

55°F

13°C

Humidity 85%
Wind Speed SSW 10 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 20 Jun 08:59 PM PDT
Extended Forecast for

11 Miles WSW Quartz Hill CA

Wind Advisory June 20, 09:54pm until June 21, 03:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory June 20, 09:54pm until June 21, 03:00am

    NOW until 3:00am Sat

    Wind Advisory

  • Tonight

    Low: 49 °F

    Clear and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 71. Windy, with a west wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 71 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 48. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.

    Low: 48 °F

    Clear and
    Windy

  • Sunday

    Sunday: Sunny, with a high near 79. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 49. Breezy, with a west wind around 25 mph, with gusts as high as 35 mph.
Saturday
Sunny, with a high near 71. Windy, with a west wind 20 to 30 mph, with gusts as high as 40 mph.
Saturday Night
Clear, with a low around 48. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph.
Sunday
Sunny, with a high near 79. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 51. West wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 58.
Thursday
Sunny, with a high near 88.
Thursday Night
Clear, with a low around 59.
Friday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.62°N 118.42°W (Elev. 2989 ft)
Last Update:
8:55 pm PDT Jun 20, 2025
Forecast Valid:
9pm PDT Jun 20, 2025-6pm PDT Jun 27, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation