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

60°F

16°C

Humidity 19%
Wind Speed SW 20 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 01 Sep 07:59 AM PDT
Extended Forecast for

4 Miles SW Quartz Hill CA

  • Today

    Today: Sunny, with a high near 79. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.

    High: 79 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 59. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    Low: 59 °F

    Mostly Clear
    and Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 78. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 78 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    Low: 61 °F

    Clear and
    Breezy then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 79. West southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 61. Breezy.

    Low: 61 °F

    Clear and
    Breezy then
    Clear

  • Friday

    Friday: Sunny, with a high near 78. Breezy.

    High: 78 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Breezy.

    Low: 61 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: A slight chance of showers. Mostly sunny, with a high near 78. Breezy.

    High: 78 °F

    Slight Chance
    Showers and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 79. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.
Tonight
Mostly clear, with a low around 59. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Wednesday
Sunny, with a high near 78. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Clear, with a low around 61. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Thursday
Sunny, with a high near 79. West southwest wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 61. Breezy.
Friday
Sunny, with a high near 78. Breezy.
Friday Night
Mostly clear, with a low around 61. Breezy.
Saturday
A slight chance of showers. Mostly sunny, with a high near 78. Breezy.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 65. Breezy.
Sunday
A chance of showers. Partly sunny, with a high near 80.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 68.
Labor Day
A chance of showers. Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Quartz Hill CA
 34.6°N 118.25°W (Elev. 3031 ft)
Last Update:
8:02 am PDT Sep 1, 2026
Forecast Valid:
8am PDT Sep 1, 2026-6pm PDT Sep 7, 2026
 
Forecast Discussion
 
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