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

65°F

18°C

Humidity 29%
Wind Speed SSW 7 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 12 Nov 08:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Today

    Today: Mostly sunny, with a high near 72. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. South southwest wind around 5 mph.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers before 4pm, then a chance of rain after 4pm. Partly sunny, with a high near 64. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 48. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain Likely
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. West northwest wind around 10 mph becoming southwest in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 55.

    High: 55 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 72. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 49. South southwest wind around 5 mph.
Friday
A chance of showers before 4pm, then a chance of rain after 4pm. Partly sunny, with a high near 64. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 48. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 58. West northwest wind around 10 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 55.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly sunny, with a high near 52.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.62°N 118.42°W (Elev. 2989 ft)
Last Update:
7:57 am PST Nov 12, 2026
Forecast Valid:
10am PST Nov 12, 2026-6pm PST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation