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

48°F

9°C

Humidity 53%
Wind Speed NNE 4 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 13 Feb 09:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Today

    Today: Sunny, with a high near 61. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 61. East southeast wind 5 to 10 mph becoming south southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 61 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 53. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 30 mph.

    High: 53 °F

    Partly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 40. Breezy. Chance of precipitation is 60%.

    Low: 40 °F

    Breezy.
    Chance Rain
    then Rain
    Likely

  • Washington's Birthday

    Washington's Birthday: Rain. High near 45. Breezy. Chance of precipitation is 90%.

    High: 45 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain. Cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain. Cloudy, with a high near 43. Windy.

    High: 43 °F

    Rain and
    Windy

Detailed Forecast

Today
Sunny, with a high near 61. North wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 15 mph.
Saturday
Increasing clouds, with a high near 61. East southeast wind 5 to 10 mph becoming south southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 40. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 53. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 30 mph.
Sunday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 40. Breezy. Chance of precipitation is 60%.
Washington's Birthday
Rain. High near 45. Breezy. Chance of precipitation is 90%.
Monday Night
Rain. Cloudy, with a low around 38. Breezy.
Tuesday
Rain. Cloudy, with a high near 43. Windy.
Tuesday Night
Rain, mainly before 4am. Mostly cloudy, with a low around 36. Breezy.
Wednesday
A chance of rain. Partly sunny, with a high near 44.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 33.
Thursday
A chance of rain and snow. Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.63°N 118.39°W (Elev. 3228 ft)
Last Update:
1:07 am PST Feb 13, 2026
Forecast Valid:
10am PST Feb 13, 2026-6pm PST Feb 19, 2026
 
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