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

GRASS MOUNTAIN (GMTC1)

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

NA

58°F

14°C

Humidity 56%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 02 Sep 08:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Clear, with a low around 55. West southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 74 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Clear, with a low around 54. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 73 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Clear, with a low around 56. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 56 °F

    Clear and
    Breezy then
    Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 11am. Sunny, with a high near 76. Breezy.

    High: 76 °F

    Slight Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 11pm. Partly cloudy, with a low around 62. Breezy.

    Low: 62 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers. Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 55. West southwest wind around 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 74. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Clear, with a low around 54. West wind around 15 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 73. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Friday Night
Clear, with a low around 56. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
A 20 percent chance of showers after 11am. Sunny, with a high near 76. Breezy.
Saturday Night
A 30 percent chance of showers, mainly after 11pm. Partly cloudy, with a low around 62. Breezy.
Sunday
A chance of showers. Partly sunny, with a high near 71.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 62.
Labor Day
A slight chance of showers. Mostly sunny, with a high near 73.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 62.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 75.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
Last Update:
2:06 pm PDT Sep 2, 2026
Forecast Valid:
9pm PDT Sep 2, 2026-6pm PDT Sep 9, 2026
 
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