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

40°F

4°C

Humidity 55%
Wind Speed E 7 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 11 Jan 09:59 PM PST
Extended Forecast for

7 Miles SW Quartz Hill CA

Wind Advisory January 11, 10:25pm until January 12, 01:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory January 11, 10:25pm until January 12, 01:00pm

    NOW until 1:00pm Mon

    Wind Advisory

  • Tonight

    Low: 38 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 55. Wind chill values as low as 25 early. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 55 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 42. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.

    Low: 42 °F

    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 56. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 56 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 46 °F

    Clear and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 48. Breezy.

    Low: 48 °F

    Clear and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Wind chill values as low as 30. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Monday
Sunny, with a high near 55. Wind chill values as low as 25 early. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Monday Night
Clear, with a low around 42. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.
Tuesday
Sunny, with a high near 56. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
Clear, with a low around 46. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Clear, with a low around 48. Breezy.
Thursday
Sunny, with a high near 61.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 60. Breezy.
Friday Night
Mostly clear, with a low around 45. Breezy.
Saturday
Mostly sunny, with a high near 58. Breezy.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Quartz Hill CA
 34.59°N 118.3°W (Elev. 4199 ft)
Last Update:
8:01 pm PST Jan 11, 2026
Forecast Valid:
10pm PST Jan 11, 2026-6pm PST Jan 18, 2026
 
Forecast Discussion
 
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