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

66°F

19°C

Humidity 47%
Wind Speed SW 6 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 25 Sep 09:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Partly cloudy, with a low around 63. West wind around 10 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 80 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 76. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 76 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 71. Breezy.

    High: 71 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 52. Breezy.

    Low: 52 °F

    Clear and
    Breezy

  • Tuesday

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

    High: 76 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. West wind around 10 mph.
Saturday
Partly sunny, with a high near 80. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 76. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 54. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 71. Breezy.
Monday Night
Clear, with a low around 52. Breezy.
Tuesday
Sunny, with a high near 76. Breezy.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Clear, with a low around 60.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 59.
Friday
Sunny, with a high near 78.
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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:
9:27 pm PDT Sep 25, 2026
Forecast Valid:
10pm PDT Sep 25, 2026-6pm PDT Oct 2, 2026
 
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