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

51°F

11°C

Humidity 13%
Wind Speed NE 0 MPH
Barometer NA
Dewpoint 2°F (-17°C)
Visibility NA
Last update 30 Nov 06:59 PM PST
Extended Forecast for

5 Miles WSW Quartz Hill CA

  • Tonight

    Tonight: Mostly clear, with a low around 41. Southwest wind 10 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Breezy, with an east northeast wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 55 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Breezy, with a north northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 40 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. Northeast wind around 5 mph becoming west in the afternoon.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 39 °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. Windy.

    Low: 37 °F

    Mostly Clear
    and Windy

  • Thursday

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

    High: 51 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Southwest wind 10 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph.
Monday
Sunny, with a high near 55. Breezy, with an east northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Monday Night
Mostly clear, with a low around 40. Breezy, with a north northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 57. Northeast wind around 5 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 39. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 37. Windy.
Thursday
Sunny, with a high near 51. Breezy.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.28°W (Elev. 3340 ft)
Last Update:
6:26 pm PST Nov 30, 2025
Forecast Valid:
7pm PST Nov 30, 2025-6pm PST Dec 7, 2025
 
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