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

73°F

23°C

Humidity 19%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 31 Jul 01:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

Heat Advisory July 31, 03:13am until July 31, 10:00am
Extreme Heat Warning July 31, 10:00am until August 2, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Heat Advisory July 31, 03:13am until July 31, 10:00am

    NOW until 10:00am Fri

    Heat Advisory

  • Overnight

    Low: 71 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 95. North northwest wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. West southwest wind 5 to 10 mph becoming northwest in the evening. Winds could gust as high as 15 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 76. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 71. Northwest wind around 10 mph, with gusts as high as 15 mph.
Friday
Sunny, with a high near 95. North northwest wind 5 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 74. West southwest wind 5 to 10 mph becoming northwest in the evening. Winds could gust as high as 15 mph.
Saturday
Sunny, with a high near 95. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Clear, with a low around 76. West wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 92.
Sunday Night
Clear, with a low around 68.
Monday
Sunny, with a high near 90.
Monday Night
Clear, with a low around 66.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Clear, with a low around 67.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 68.
Thursday
Sunny, with a high near 89.
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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:
2:41 am PDT Jul 31, 2026
Forecast Valid:
3am PDT Jul 31, 2026-6pm PDT Aug 6, 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