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

50°F

10°C

Humidity 40%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 30 Nov 03:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Today

    Today: Increasing clouds, with a high near 59. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 59 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Breezy, with a northwest wind 10 to 20 mph becoming northeast after midnight. Winds could gust as high as 30 mph.

    Low: 39 °F

    Mostly Cloudy
    then Mostly
    Clear and
    Breezy

  • Monday

    Monday: Sunny, with a high near 55. Wind chill values as low as 30 early. Breezy, with a northeast wind around 25 mph, with gusts as high as 40 mph.

    High: 55 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. Wind chill values as low as 30. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 37 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58. North northeast wind 10 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. Breezy.

    Low: 37 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 51. Breezy.

    High: 51 °F

    Sunny and
    Breezy

Detailed Forecast

Today
Increasing clouds, with a high near 59. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Breezy, with a northwest wind 10 to 20 mph becoming northeast after midnight. Winds could gust as high as 30 mph.
Monday
Sunny, with a high near 55. Wind chill values as low as 30 early. Breezy, with a northeast wind around 25 mph, with gusts as high as 40 mph.
Monday Night
Mostly clear, with a low around 37. Wind chill values as low as 30. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 58. North northeast wind 10 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 37. Breezy.
Thursday
Sunny, with a high near 51. Breezy.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 60.
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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:
2:46 am PST Nov 30, 2025
Forecast Valid:
4am PST Nov 30, 2025-6pm PST Dec 6, 2025
 
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