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

70°F

21°C

Humidity NA
Wind Speed SW 15 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

14 Miles W Quartz Hill CA

Heat Advisory August 6, 07:25am until August 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 6, 07:25am until August 9, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Today

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 88. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 66. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 90. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 68. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 91. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 67.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
14 Miles W Quartz Hill CA
 34.64°N 118.45°W (Elev. 3973 ft)
Last Update:
6:21 am PDT Aug 6, 2026
Forecast Valid:
7am PDT Aug 6, 2026-6pm PDT Aug 12, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation