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

63°F

17°C

Humidity 27%
Wind Speed SSW 13 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 11 Nov 07:59 PM PST
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Southwest wind around 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers after 10am. Increasing clouds, with a high near 54. Breezy, with a south southwest wind around 20 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers. Low around 48. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 48 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 50. Breezy. Chance of precipitation is 60%.

    High: 50 °F

    Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 42. Breezy.

    Low: 42 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 52.

    High: 52 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 4am. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. Southwest wind around 10 mph.
Wednesday
Partly sunny, with a high near 67. South southwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 46. Southwest wind around 15 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of showers after 10am. Increasing clouds, with a high near 54. Breezy, with a south southwest wind around 20 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Showers. Low around 48. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 50. Breezy. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 42. Breezy.
Saturday
A chance of showers. Partly sunny, with a high near 52.
Saturday Night
A chance of showers, mainly before 4am. Mostly cloudy, with a low around 42.
Sunday
A slight chance of showers before 10am. Mostly sunny, with a high near 53.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 42.
Monday
A chance of showers. Partly sunny, with a high near 52.
Monday Night
A chance of showers. Mostly cloudy, with a low around 39.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.4°W (Elev. 3799 ft)
Last Update:
8:26 pm PST Nov 11, 2025
Forecast Valid:
8pm PST Nov 11, 2025-6pm PST Nov 18, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation