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

63°F

17°C

Humidity 27%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 07 Nov 11:59 AM PST
Extended Forecast for

10 Miles WSW Quartz Hill CA

Wind Advisory until November 7, 02:00pm
Red Flag Warning until November 7, 06:00pm
Click here for hazard details and duration
...
Red Flag Warning
  •  
    Wind Advisory until November 7, 02:00pm
    Red Flag Warning until November 7, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 65 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 53. Northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 67 °F

    Sunny and
    Breezy then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 54. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Northeast wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 65. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 35 mph.
Tonight
Mostly clear, with a low around 53. Northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 67. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Clear, with a low around 54. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 68. Northeast wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Clear, with a low around 53.
Veterans Day
Sunny, with a high near 65.
Wednesday Night
Clear, with a low around 53.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 51.
Friday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles WSW Quartz Hill CA
 34.56°N 118.35°W (Elev. 4629 ft)
Last Update:
10:52 am PST Nov 7, 2026
Forecast Valid:
12pm PST Nov 7, 2026-6pm PST Nov 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation