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

31°F

-1°C

Humidity 62%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 21 Feb 03:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 64. Northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. Northeast wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. West northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 69 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 64. Northeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 50. Northeast wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 72. North northwest wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 52. West northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 69. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Mostly sunny, with a high near 70.
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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:
11:36 am PST Feb 23, 2026
Forecast Valid:
12pm PST Feb 23, 2026-6pm PST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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