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

51°F

11°C

Humidity 50%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 08 Feb 06:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Today

    Today: Sunny, with a high near 69. Northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 69. Northwest wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. North northwest wind around 10 mph becoming south in the evening. Winds could gust as high as 15 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 55. Windy, with a south southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 55 °F

    Slight Chance
    Rain and
    Windy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 43. Breezy.

    Low: 43 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: A 30 percent chance of rain. Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 4am. Partly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A slight chance of rain after 10am. Mostly sunny, with a high near 55.

    High: 55 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Sunny, with a high near 69. Northeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 46. Northwest wind around 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 69. Northwest wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 48. North northwest wind around 10 mph becoming south in the evening. Winds could gust as high as 15 mph.
Tuesday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 55. Windy, with a south 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
A 50 percent chance of rain. Mostly cloudy, with a low around 43. Breezy.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 53. Breezy.
Wednesday Night
A slight chance of rain before 4am. Partly cloudy, with a low around 38.
Thursday
A slight chance of rain after 10am. Mostly sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 39.
Friday
Sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 39.
Saturday
A slight chance of rain. Partly sunny, with a high near 53. Breezy.
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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:
7:21 am PST Feb 8, 2026
Forecast Valid:
7am PST Feb 8, 2026-6pm PST Feb 14, 2026
 
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