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

85°F

29°C

Humidity 21%
Wind Speed ENE 4 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index82°F (28°C)
Last update 07 Oct 12:59 PM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 89. East northeast wind around 10 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 74. West wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 89. North northwest wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Breezy.

    Low: 62 °F

    Clear and
    Breezy then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Breezy.

    High: 73 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A chance of showers after 11pm. Partly cloudy, with a low around 56. Breezy.

    Low: 56 °F

    Chance
    Showers and
    Breezy

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 64. Breezy.

    High: 64 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 89. East northeast wind around 10 mph.
Tonight
Clear, with a low around 74. West wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 89. North northwest wind 10 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 72. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 85. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 62. Breezy.
Saturday
Mostly sunny, with a high near 73. Breezy.
Saturday Night
A chance of showers after 11pm. Partly cloudy, with a low around 56. Breezy.
Sunday
A chance of showers. Partly sunny, with a high near 64. Breezy.
Sunday Night
Showers likely, mainly after 11pm. Mostly cloudy, with a low around 48. Windy.
Columbus Day
Showers likely. Mostly cloudy, with a high near 57. Windy.
Monday Night
A chance of showers. Mostly cloudy, with a low around 46.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.31°W (Elev. 3599 ft)
Last Update:
11:26 am PDT Oct 7, 2026
Forecast Valid:
1pm PDT Oct 7, 2026-6pm PDT Oct 13, 2026
 
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