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

64°F

18°C

Humidity 70%
Wind Speed SW 14 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 30 Aug 10:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Overnight

    Overnight: Clear, with a low around 62. Southwest wind 5 to 10 mph.

    Low: 62 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 82. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 82 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 56. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 56 °F

    Clear and
    Breezy then
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 79 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 55. Breezy, with a west southwest wind 20 to 25 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 35 mph.

    Low: 55 °F

    Clear and
    Breezy then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

Detailed Forecast

Overnight
Clear, with a low around 62. Southwest wind 5 to 10 mph.
Monday
Sunny, with a high near 82. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Monday Night
Clear, with a low around 56. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Sunny, with a high near 79. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
Clear, with a low around 55. Breezy, with a west southwest wind 20 to 25 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 35 mph.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Clear, with a low around 56.
Thursday
Sunny, with a high near 75.
Thursday Night
Clear, with a low around 55.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 57. Breezy.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
A chance of showers. Partly cloudy, with a low around 62.
Sunday
A chance of showers. Partly sunny, with a high near 76.
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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:
11:26 pm PDT Aug 30, 2026
Forecast Valid:
12am PDT Aug 31, 2026-6pm PDT Sep 6, 2026
 
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