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

41°F

5°C

Humidity 42%
Wind Speed E 7 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 11 Jan 09:59 AM PST
Extended Forecast for

5 Miles WSW Quartz Hill CA

Wind Advisory January 11, 10:20am until January 11, 01:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory January 11, 10:20am until January 11, 01:00pm

    NOW until 1:00pm Sun

    Wind Advisory

  • Today

    High: 53 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 36. Wind chill values as low as 30. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 36 °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 around 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Clear, with a low around 41. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.

    Low: 41 °F

    Clear and
    Breezy

  • Tuesday

    Tuesday: Sunny, with a high near 59. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    High: 59 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 47. Breezy.

    Low: 47 °F

    Clear and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 53. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 36. Wind chill values as low as 30. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 55. Wind chill values as low as 25 early. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Monday Night
Clear, with a low around 41. Breezy, with a north northeast wind around 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 59. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Tuesday Night
Clear, with a low around 46.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Clear, with a low around 47. Breezy.
Thursday
Sunny, with a high near 64.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 44. Breezy.
Saturday
Mostly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.28°W (Elev. 3340 ft)
Last Update:
1:06 am PST Jan 11, 2026
Forecast Valid:
10am PST Jan 11, 2026-6pm PST Jan 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation