National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

55°F

13°C

Humidity 72%
Wind Speed SW 18 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 25 May 06:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Increasing clouds, with a low around 49. West southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 59 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    Low: 44 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain after 11am. Mostly sunny, with a high near 54. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 54 °F

    Slight Chance
    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 41. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 41 °F

    Slight Chance
    Rain and
    Breezy then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 51.

    Low: 51 °F

    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 49. West southwest wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 59. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
Mostly cloudy, with a low around 44. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday
A 20 percent chance of rain after 11am. Mostly sunny, with a high near 54. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 41. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 67.
Friday Night
Clear, with a low around 51.
Saturday
Sunny, with a high near 74.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 78.
Sunday Night
Clear, with a low around 59.
Monday
Sunny, with a high near 81.
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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:
1:36 pm PDT May 25, 2026
Forecast Valid:
7pm PDT May 25, 2026-6pm PDT Jun 1, 2026
 
Forecast Discussion
 
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