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

75°F

24°C

Humidity 16%
Wind Speed NNW 10 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 09 Jul 10:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

Extreme Heat Watch July 14, 10:00am until July 16, 08:00pm
Heat Advisory July 9, 11:31pm until July 14, 10:00am
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 9, 11:31pm until July 14, 10:00am

    NOW until 10:00am Tue

    Heat Advisory

  • Tonight

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93. West northwest wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 70. West wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 91. West northwest wind 5 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 91 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 71. West northwest wind around 10 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 93. West northwest wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 70. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 91. West northwest wind 5 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 71. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 71. Breezy.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
Last Update:
11:27 pm PDT Jul 9, 2026
Forecast Valid:
11pm PDT Jul 9, 2026-6pm PDT Jul 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation