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 51%
Wind Speed SSW 17 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 25 May 12:59 PM PDT
Extended Forecast for

10 Miles SW Quartz Hill CA

  • Memorial Day

    Memorial Day: Sunny, with a high near 64. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 64 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Increasing clouds, with a low around 48. West southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 48 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 55 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    Low: 43 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 50 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 41. Breezy.

    Low: 41 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Memorial Day
Sunny, with a high near 64. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Increasing clouds, with a low around 48. West southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly cloudy, with a high near 55. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday
Mostly sunny, with a high near 50. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Wednesday Night
Mostly cloudy, with a low around 41. Breezy.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Mostly clear, with a low around 41. Breezy.
Friday
Sunny, with a high near 61.
Friday Night
Clear, with a low around 50.
Saturday
Sunny, with a high near 69.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SW Quartz Hill CA
 34.56°N 118.35°W (Elev. 4629 ft)
Last Update:
1:36 pm PDT May 25, 2026
Forecast Valid:
1pm PDT May 25, 2026-6pm PDT May 31, 2026
 
Forecast Discussion
 
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