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

64°F

18°C

Humidity 70%
Wind Speed SW 14 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Last update 30 Aug 10:59 PM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

  • Overnight

    Overnight: Clear, with a low around 56. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 56 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 84. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    High: 84 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 50. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph.

    Low: 50 °F

    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 81. Windy, with a southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 81 °F

    Sunny and
    Windy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph in the evening. Winds could gust as high as 40 mph.

    Low: 50 °F

    Clear and
    Windy then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Breezy.

    High: 81 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59. Breezy.

    Low: 59 °F

    Clear and
    Breezy then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Breezy.

    High: 79 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Clear, with a low around 59. Breezy.

    Low: 59 °F

    Clear and
    Breezy then
    Clear

Detailed Forecast

Overnight
Clear, with a low around 56. Southwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 84. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Monday Night
Clear, with a low around 50. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph.
Tuesday
Sunny, with a high near 81. Windy, with a southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph.
Tuesday Night
Clear, with a low around 50. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph in the evening. Winds could gust as high as 40 mph.
Wednesday
Sunny, with a high near 81. Breezy.
Wednesday Night
Clear, with a low around 59. Breezy.
Thursday
Sunny, with a high near 79. Breezy.
Thursday Night
Clear, with a low around 59. Breezy.
Friday
Sunny, with a high near 80. Breezy.
Friday Night
Mostly clear, with a low around 61. Breezy.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A chance of showers. Partly cloudy, with a low around 66. Breezy.
Sunday
A chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.28°W (Elev. 3340 ft)
Last Update:
11:26 pm PDT Aug 30, 2026
Forecast Valid:
12am PDT Aug 31, 2026-6pm PDT Sep 6, 2026
 
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