Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

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

NA

89°F

32°C

Humidity 21%
Wind Speed SW 14 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index85°F (29°C)
Last update 09 Aug 11:59 AM PDT
Extended Forecast for

7 Miles WSW Quartz Hill CA

Heat Advisory August 9, 12:43pm until August 9, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 9, 12:43pm until August 9, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 73. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 86. 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: 86 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 70 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 82 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. Breezy.

    Low: 66 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Breezy.

    High: 78 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. Breezy.

    Low: 63 °F

    Partly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 91. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 73. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 86. 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
Partly cloudy, with a low around 70. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly sunny, with a high near 82. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Tuesday Night
Mostly clear, with a low around 66. Breezy.
Wednesday
Sunny, with a high near 78. Breezy.
Wednesday Night
Partly cloudy, with a low around 63. Breezy.
Thursday
Mostly sunny, with a high near 74. Breezy.
Thursday Night
Partly cloudy, with a low around 59. Breezy.
Friday
Mostly sunny, with a high near 74. Breezy.
Friday Night
Mostly clear, with a low around 61. Breezy.
Saturday
Sunny, with a high near 76.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Quartz Hill CA
 34.59°N 118.3°W (Elev. 4199 ft)
11:27 am PDT Aug 9, 2026
12pm PDT Aug 9, 2026-6pm PDT Aug 15, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database