National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

GRASS MOUNTAIN (GMTC1)

Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.

NA

45°F

7°C

Humidity 40%
Wind Speed E 3 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 13 Jan 01:59 AM PST
Extended Forecast for

11 Miles W Quartz Hill CA

Wind Advisory January 13, 02:20am until January 14, 02:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory January 13, 02:20am until January 14, 02:00pm

    NOW until 2:00pm Wed

    Wind Advisory

  • Overnight

    Low: 40 °F

    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 54. Wind chill values as low as 30 early. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 42. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 42 °F

    Clear and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 58. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Clear, with a low around 43. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 43 °F

    Clear and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a low around 40. Wind chill values as low as 30. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 54. Wind chill values as low as 30 early. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph.
Tuesday Night
Clear, with a low around 42. Breezy, with a north northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 58. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 43. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 60.
Thursday Night
Clear, with a low around 42.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 46.
M.L.King Day
Sunny, with a high near 59.
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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:
1:06 am PST Jan 13, 2026
Forecast Valid:
2am PST Jan 13, 2026-6pm PST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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