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

45°F

7°C

Humidity 70%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 07 Feb 05:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Today

    Today: Sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 45. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 45 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. North northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 66. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday

    Tuesday: A 40 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 55. Breezy.

    High: 55 °F

    Chance Rain
    and Breezy

  • Tuesday Night

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

    Low: 42 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 10am. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 66. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 45. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 69. Northeast wind around 15 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 45. North northwest wind around 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 66. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 46.
Tuesday
A 40 percent chance of rain, mainly after 10am. Mostly cloudy, with a high near 55. Breezy.
Tuesday Night
A chance of rain, mainly before 4am. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 53.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 39.
Thursday
A slight chance of rain. Mostly sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.63°N 118.39°W (Elev. 3228 ft)
Last Update:
5:26 am PST Feb 7, 2026
Forecast Valid:
6am PST Feb 7, 2026-6pm PST Feb 13, 2026
 
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Additional Resources

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Chance of Precipitation