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

49°F

9°C

Humidity 57%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 09 Dec 02:59 AM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • Overnight

    Overnight: Clear, with a low around 43. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 68 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 47. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 47 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 70 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 47. North northeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

Detailed Forecast

Overnight
Clear, with a low around 43. North northeast wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 68. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Clear, with a low around 47. North northeast wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 70. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Clear, with a low around 47. North northeast wind around 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 71.
Thursday Night
Clear, with a low around 48.
Friday
Sunny, with a high near 67.
Friday Night
Clear, with a low around 47.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Sunny, with a high near 64.
Sunday Night
Clear, with a low around 43.
Monday
Sunny, with a high near 63.
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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:
2:41 am PST Dec 9, 2025
Forecast Valid:
3am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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