National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

45°F

7°C

Humidity 62%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 02 Dec 05:59 PM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

Wind Advisory December 3, 06:00am until December 4, 03:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 39. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 55. Windy, with a northeast wind 15 to 20 mph increasing to 25 to 30 mph in the morning. Winds could gust as high as 40 mph.

    High: 55 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36. Wind chill values as low as 25. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.

    Low: 36 °F

    Mostly Clear
    and Breezy

  • Thursday

    Thursday: Sunny, with a high near 54. Wind chill values as low as 25 early. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38. North northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 39. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 55. Windy, with a northeast wind 15 to 20 mph increasing to 25 to 30 mph in the morning. Winds could gust as high as 40 mph.
Wednesday Night
Mostly clear, with a low around 36. Wind chill values as low as 25. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.
Thursday
Sunny, with a high near 54. Wind chill values as low as 25 early. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 38. North northeast wind around 10 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 60.
Friday Night
Clear, with a low around 41.
Saturday
Sunny, with a high near 64.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 63.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.63°N 118.39°W (Elev. 3228 ft)
Last Update:
2:26 pm PST Dec 2, 2025
Forecast Valid:
6pm PST Dec 2, 2025-6pm PST Dec 9, 2025
 
Forecast Discussion
 
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Additional Resources

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