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 47%
Wind Speed E 7 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 10 Jan 05:59 PM PST
Extended Forecast for

11 Miles W Quartz Hill CA

Wind Advisory January 10, 06:40pm until January 11, 01:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory January 10, 06:40pm until January 11, 01:00pm

    NOW until 1:00pm Sun

    Wind Advisory

  • Tonight

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. Wind chill values as low as 25 early. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 52 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Wind chill values as low as 30. East northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Wind chill values as low as 30 early. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 40 °F

    Clear then
    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 59. Breezy.

    High: 59 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 35. Wind chill values as low as 25. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 52. Wind chill values as low as 25 early. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 37. Wind chill values as low as 30. East northeast wind around 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 55. Wind chill values as low as 30 early. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Clear, with a low around 40. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 59. Breezy.
Tuesday Night
Clear, with a low around 45.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Clear, with a low around 47.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.67°N 118.4°W (Elev. 3599 ft)
Last Update:
1:07 pm PST Jan 10, 2026
Forecast Valid:
6pm PST Jan 10, 2026-6pm PST Jan 17, 2026
 
Forecast Discussion
 
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