Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

91°F

33°C

Humidity 20%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index87°F (31°C)
Last update 25 Aug 09:59 AM PDT
Extended Forecast for

5 Miles SW Quartz Hill CA

Extreme Heat Warning until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Today

    High: 96 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Breezy, with a west southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 96 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 75. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 76.

    Low: 76 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76. Breezy.

    Low: 76 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Today
Mostly sunny and hot, with a high near 96. North northwest wind 5 to 10 mph becoming west southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 75. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 96. Breezy, with a west southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 75. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 95. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 76. Breezy.
Saturday
Sunny, with a high near 91. Breezy.
Saturday Night
Clear, with a low around 73. Breezy.
Sunday
Sunny, with a high near 87. Breezy.
Sunday Night
Mostly clear, with a low around 68. Breezy.
Monday
Sunny, with a high near 83. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Quartz Hill CA
 34.6°N 118.28°W (Elev. 3271 ft)
8:36 am PDT Aug 25, 2026
10am PDT Aug 25, 2026-6pm PDT Aug 31, 2026
 
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