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

44°F

7°C

Humidity 49%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 30 Nov 10:59 PM PST
Extended Forecast for

7 Miles SSW Quartz Hill CA

Wind Advisory December 1, 04:00am until December 1, 03:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 42. Breezy, with a northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 42 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: Sunny, with a high near 50. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 52. Northeast wind 5 to 10 mph becoming west in the afternoon.

    High: 52 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. Windy.

    Low: 39 °F

    Mostly Clear
    and Windy

  • Thursday

    Thursday: Sunny, with a high near 46. Breezy.

    High: 46 °F

    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 42. Breezy, with a northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 50. Breezy, with a northeast wind around 25 mph, with gusts as high as 35 mph.
Monday Night
Mostly clear, with a low around 41. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 52. Northeast wind 5 to 10 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 40. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 39. Windy.
Thursday
Sunny, with a high near 46. Breezy.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Quartz Hill CA
 34.58°N 118.27°W (Elev. 4183 ft)
Last Update:
8:46 pm PST Nov 30, 2025
Forecast Valid:
12am PST Dec 1, 2025-6pm PST Dec 7, 2025
 
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