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

36°F

2°C

Humidity 48%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 04 Dec 03:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

Wind Advisory December 4, 04:34am until December 4, 03:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 4, 04:34am until December 4, 03:00pm

    NOW until 3:00pm Thu

    Wind Advisory

  • Today

    High: 55 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 37. Wind chill values as low as 30. North northeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 60. Wind chill values as low as 30 early. Northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 41. North wind around 10 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 63. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

Detailed Forecast

Today
Sunny, with a high near 55. Wind chill values as low as 20 early. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Tonight
Clear, with a low around 37. Wind chill values as low as 30. North northeast wind around 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 60. Wind chill values as low as 30 early. Northeast wind around 15 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 41. North wind around 10 mph, with gusts as high as 15 mph.
Saturday
Sunny, with a high near 63. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 42.
Sunday
Sunny, with a high near 61.
Sunday Night
Clear, with a low around 44.
Monday
Sunny, with a high near 62.
Monday Night
Clear, with a low around 46. Breezy.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 70.
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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:
2:16 am PST Dec 4, 2025
Forecast Valid:
4am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation