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Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

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

NA

85°F

29°C

Humidity 18%
Wind Speed SSW 16 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Heat Index82°F (28°C)
Last update 20 Mar 02:59 PM PDT
Extended Forecast for

7 Miles WSW Quartz Hill CA

Extreme Heat Warning March 20, 04:14pm until March 20, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning March 20, 04:14pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 87 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 67. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Clear and
    Breezy then
    Clear

  • Saturday

    Saturday: Sunny, with a high near 77. West southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. West northwest wind around 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 87. Breezy, with a southwest wind around 20 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 67. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 77. West southwest wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 59. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 79. West northwest wind around 10 mph, with gusts as high as 15 mph.
Sunday Night
Clear, with a low around 58.
Monday
Sunny, with a high near 80.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Clear, with a low around 59.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Clear, with a low around 58. Breezy.
Thursday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Quartz Hill CA
 34.59°N 118.3°W (Elev. 4199 ft)
Last Update:
2:07 pm PDT Mar 20, 2026
Forecast Valid:
4pm PDT Mar 20, 2026-6pm PDT Mar 26, 2026
 
Forecast Discussion
 
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