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

80°F

27°C

Humidity 35%
Wind Speed SSW 12 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index80°F (27°C)
Last update 13 Jul 05:59 PM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

  • Tonight

    Tonight: Clear, with a low around 71. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph.

    Low: 71 °F

    Clear and
    Windy then
    Clear

  • Monday

    Monday: Sunny, with a high near 93. Windy, with a southwest wind 5 to 15 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 93 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Clear, with a low around 68. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph.

    Low: 68 °F

    Clear and
    Windy

  • Tuesday

    Tuesday: Sunny, with a high near 86. Breezy, with a southwest wind 15 to 20 mph increasing to 20 to 25 mph in the morning. Winds could gust as high as 40 mph.

    High: 86 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.

    Low: 61 °F

    Clear and
    Windy

  • Wednesday

    Wednesday: Sunny, with a high near 84. Breezy.

    High: 84 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. Breezy.

    Low: 62 °F

    Clear and
    Breezy then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Breezy.

    Low: 64 °F

    Partly Cloudy
    and Breezy
    then Clear

Detailed Forecast

Tonight
Clear, with a low around 71. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph.
Monday
Sunny, with a high near 93. Windy, with a southwest wind 5 to 15 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 45 mph.
Monday Night
Clear, with a low around 68. Windy, with a southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph.
Tuesday
Sunny, with a high near 86. Breezy, with a southwest wind 15 to 20 mph increasing to 20 to 25 mph in the morning. Winds could gust as high as 40 mph.
Tuesday Night
Clear, with a low around 61. Windy, with a southwest wind 20 to 30 mph, with gusts as high as 40 mph.
Wednesday
Sunny, with a high near 84. Breezy.
Wednesday Night
Clear, with a low around 62. Breezy.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 64. Breezy.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 67. Breezy.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 68. Breezy.
Sunday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.28°W (Elev. 3340 ft)
Last Update:
1:34 pm PDT Jul 13, 2025
Forecast Valid:
6pm PDT Jul 13, 2025-6pm PDT Jul 20, 2025
 
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