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

80°F

27°C

Humidity 19%
Wind Speed SW 15 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Heat Index79°F (26°C)
Last update 26 Jul 06:59 PM PDT
Extended Forecast for

7 Miles WSW Quartz Hill CA

Heat Advisory July 26, 07:38pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 07:38pm until July 27, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 92. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 92 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 68 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 90 °F

    Sunny then
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 66. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 66 °F

    Clear and
    Breezy then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Breezy.

    High: 87 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 67. Breezy.

    Low: 67 °F

    Clear and
    Breezy then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Southwest wind around 15 mph becoming west northwest in the evening. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 92. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 68. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 90. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Clear, with a low around 66. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 87. Breezy.
Wednesday Night
Clear, with a low around 67. Breezy.
Thursday
Sunny, with a high near 89.
Thursday Night
Clear, with a low around 69. Breezy.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny and hot, with a high near 96.
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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:
1:23 pm PDT Jul 26, 2026
Forecast Valid:
7pm PDT Jul 26, 2026-6pm PDT Aug 2, 2026
 
Forecast Discussion
 
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Additional Resources

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