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

67°F

19°C

Humidity 55%
Wind Speed SW 13 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 11 Aug 04:59 AM PDT
Extended Forecast for

9 Miles W Quartz Hill CA

  • Today

    Today: Sunny, with a high near 87. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 87 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 65 °F

    Mostly Clear
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 80. Breezy, with a southwest wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 80 °F

    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    Low: 61 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    High: 75 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Breezy.

    Low: 56 °F

    Partly Cloudy
    and Breezy

  • Friday

    Friday: Sunny, with a high near 76. Breezy.

    High: 76 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. Breezy.

    Low: 57 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 65. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a high near 80. Breezy, with a southwest wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph.
Wednesday Night
Partly cloudy, with a low around 61. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Thursday
Mostly sunny, with a high near 75. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Thursday Night
Partly cloudy, with a low around 56. Breezy.
Friday
Sunny, with a high near 76. Breezy.
Friday Night
Mostly clear, with a low around 57. Breezy.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 60. Breezy.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 62. Breezy.
Monday
Mostly sunny, with a high near 81. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles W Quartz Hill CA
 34.65°N 118.37°W (Elev. 3396 ft)
Last Update:
1:41 am PDT Aug 11, 2026
Forecast Valid:
5am PDT Aug 11, 2026-6pm PDT Aug 17, 2026
 
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