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

54°F

12°C

Humidity 12%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 2°F (-17°C)
Visibility NA
Last update 18 Apr 09:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Today

    Today: Mostly sunny, with a high near 72. Breezy, with an east northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 72 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. South wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 70. Light west southwest wind becoming south southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 20 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Breezy, with a light west southwest wind becoming south southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 68 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 57.

    High: 57 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 72. Breezy, with an east northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly cloudy, with a low around 52. South wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 70. Light west southwest wind becoming south southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 47. Southwest wind 10 to 15 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 68. Breezy, with a light west southwest wind becoming south southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 45.
Tuesday
A 30 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
Last Update:
1:01 am PDT Apr 18, 2026
Forecast Valid:
10am PDT Apr 18, 2026-6pm PDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation