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

58°F

14°C

Humidity 36%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 17 Oct 04:59 AM PDT
Extended Forecast for

12 Miles W Quartz Hill CA

Red Flag Warning October 17, 05:29am until October 17, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning October 17, 05:29am until October 17, 08:00pm

    NOW until 8:00pm Sat

    Red Flag Warning

  • Today

    High: 78 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 56. East northeast wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 78. East northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56. East wind around 5 mph becoming west northwest after midnight.

    Low: 56 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 78. West northwest wind 5 to 10 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. Breezy.

    Low: 49 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 11pm. Partly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 78. Windy, with an east northeast wind 20 to 30 mph, with gusts as high as 40 mph.
Tonight
Partly cloudy, with a low around 56. East northeast wind 5 to 15 mph becoming north after midnight. Winds could gust as high as 25 mph.
Sunday
Sunny, with a high near 78. East northeast wind around 10 mph, with gusts as high as 15 mph.
Sunday Night
Clear, with a low around 56. East wind around 5 mph becoming west northwest after midnight.
Monday
Sunny, with a high near 78. West northwest wind 5 to 10 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Mostly clear, with a low around 49. Breezy.
Tuesday
Sunny, with a high near 65.
Tuesday Night
A chance of showers after 11pm. Partly cloudy, with a low around 46.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 59.
Wednesday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 44.
Thursday
A chance of showers. Mostly sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Quartz Hill CA
 34.67°N 118.43°W (Elev. 3396 ft)
Last Update:
12:41 am PDT Oct 17, 2026
Forecast Valid:
5am PDT Oct 17, 2026-6pm PDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation