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

52°F

11°C

Humidity 77%
Wind Speed SW 14 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 31 Mar 03:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Today

    Today: A 40 percent chance of rain after 11am. Mostly cloudy, with a high near 58. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 42. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 61. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 57. West wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 57 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 63. Breezy.

    High: 63 °F

    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. Breezy.

    Low: 49 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 69. Breezy.

    High: 69 °F

    Sunny and
    Breezy

Detailed Forecast

Today
A 40 percent chance of rain after 11am. Mostly cloudy, with a high near 58. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 42. Southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 61. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 41. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 57. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 63. Breezy.
Friday Night
Mostly clear, with a low around 49. Breezy.
Saturday
Sunny, with a high near 69. Breezy.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Sunny, with a high near 74.
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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:
12:41 am PDT Mar 31, 2026
Forecast Valid:
4am PDT Mar 31, 2026-6pm PDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation