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

63°F

17°C

Humidity 48%
Wind Speed SW 21 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 09 Oct 08:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Increasing clouds, with a low around 61. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 71. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers, mainly after 11pm. Cloudy, with a low around 58. Southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 62. Windy, with a north northwest wind 15 to 20 mph becoming south southwest 25 to 30 mph in the morning. Winds could gust as high as 50 mph. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Chance
    Showers and
    Windy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 47. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance
    Showers and
    Windy

  • Columbus Day

    Columbus Day: Showers likely. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 70%.

    High: 52 °F

    Showers
    Likely and
    Breezy

  • Monday Night

    Monday Night: A 40 percent chance of showers, mainly before 11pm. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 11am. Mostly sunny, with a high near 59.

    High: 59 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 61. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy, with a high near 71. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A 40 percent chance of showers, mainly after 11pm. Cloudy, with a low around 58. Southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 40 percent chance of showers. Cloudy, then gradually becoming mostly sunny, with a high near 62. Windy, with a north northwest wind 15 to 20 mph becoming south southwest 25 to 30 mph in the morning. Winds could gust as high as 50 mph. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A 50 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 47. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Showers likely. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 70%.
Monday Night
A 40 percent chance of showers, mainly before 11pm. Partly cloudy, with a low around 44.
Tuesday
A slight chance of showers before 11am. Mostly sunny, with a high near 59.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Clear, with a low around 49. Breezy.
Thursday
Sunny, with a high near 70. Windy.
Thursday Night
Clear, with a low around 54. Windy.
Friday
Sunny, with a high near 73. Windy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
Last Update:
2:46 pm PDT Oct 9, 2026
Forecast Valid:
10pm PDT Oct 9, 2026-6pm PDT Oct 16, 2026
 
Forecast Discussion
 
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Additional Resources

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