National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

GRASS MOUNTAIN (GMTC1)

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

NA

53°F

12°C

Humidity 81%
Wind Speed SW 7 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 21 Jun 06:59 AM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

  • Today

    Today: Sunny, with a high near 85. Breezy, with a west southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 64. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.

    Low: 64 °F

    Clear and
    Breezy then
    Clear

  • Monday

    Monday: Sunny, with a high near 91. Breezy, with a west wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 91 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 68. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 68 °F

    Clear and
    Breezy then
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 72. Breezy.

    Low: 72 °F

    Clear and
    Breezy then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. Breezy.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 74. Breezy.

    Low: 74 °F

    Mostly Clear
    and Breezy
    then Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Breezy.

    High: 91 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 85. Breezy, with a west southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Tonight
Clear, with a low around 64. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 35 mph.
Monday
Sunny, with a high near 91. Breezy, with a west wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Clear, with a low around 68. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 93. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Clear, with a low around 72. Breezy.
Wednesday
Sunny, with a high near 95. Breezy.
Wednesday Night
Clear, with a low around 74. Breezy.
Thursday
Sunny, with a high near 91. Breezy.
Thursday Night
Clear, with a low around 69. Breezy.
Friday
Sunny, with a high near 88. Breezy.
Friday Night
Clear, with a low around 65. Breezy.
Saturday
Sunny, with a high near 83. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.64°N 118.29°W (Elev. 3018 ft)
Last Update:
11:31 pm PDT Jun 20, 2026
Forecast Valid:
7am PDT Jun 21, 2026-6pm PDT Jun 27, 2026
 
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