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

76°F

24°C

Humidity 32%
Wind Speed SW 16 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index77°F (25°C)
Last update 22 Aug 08:59 PM PDT
Extended Forecast for

12 Miles W Quartz Hill CA

Extreme Heat Watch August 25, 10:00am until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Tonight

    Tonight: Clear, with a low around 71. West wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 93 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 71 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 93. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 93 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. Breezy, with a southwest wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph.

    Low: 73 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71. Breezy.

    Low: 71 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Breezy.

    High: 97 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71. Breezy.

    Low: 71 °F

    Mostly Clear
    and Breezy

Detailed Forecast

Tonight
Clear, with a low around 71. West wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 93. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 71. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 93. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 73. Breezy, with a southwest wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 71. Breezy.
Wednesday
Sunny and hot, with a high near 97. Breezy.
Wednesday Night
Mostly clear, with a low around 71. Breezy.
Thursday
Mostly sunny and hot, with a high near 97.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 94.
Basemap Options
Click map to change the forecast location
Loading map...
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:
7:41 pm PDT Aug 22, 2026
Forecast Valid:
9pm PDT Aug 22, 2026-6pm PDT Aug 29, 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