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

75°F

24°C

Humidity 41%
Wind Speed N 3 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 09 Sep 03:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 90. North wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 90 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 76. Northwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 73 °F

    Clear then
    Mostly Clear
    and Breezy

  • Friday

    Friday: Sunny, with a high near 86. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 86 °F

    Sunny and
    Breezy then
    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. Breezy.

    Low: 58 °F

    Clear and
    Breezy

  • Sunday

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

    High: 76 °F

    Sunny and
    Breezy then
    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 90. North wind 5 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 76. Northwest wind around 10 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 91. Northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 73. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 86. Breezy, with a west southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Clear, with a low around 65.
Saturday
Sunny, with a high near 78.
Saturday Night
Clear, with a low around 58. Breezy.
Sunday
Sunny, with a high near 76. Breezy.
Sunday Night
Clear, with a low around 56.
Monday
Sunny, with a high near 77.
Monday Night
Clear, with a low around 56.
Tuesday
Sunny, with a high near 74.
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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:
1:31 am PDT Sep 9, 2026
Forecast Valid:
4am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
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