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

72°F

22°C

Humidity 34%
Wind Speed SSW 9 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 09 Aug 05:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

Heat Advisory August 9, 06:47am until August 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 9, 06:47am until August 9, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Today

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 82 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Breezy.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Breezy.

    Low: 60 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Today
Sunny, with a high near 91. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 87. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 67. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 82. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 80. Breezy.
Wednesday Night
Mostly clear, with a low around 60. Breezy.
Thursday
Mostly sunny, with a high near 76. Breezy.
Thursday Night
Partly cloudy, with a low around 58. Breezy.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
Last Update:
11:26 pm PDT Aug 8, 2026
Forecast Valid:
6am PDT Aug 9, 2026-6pm PDT Aug 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation