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

GRASS MOUNTAIN (GMTC1)

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

NA

59°F

15°C

Humidity 61%
Wind Speed SW 20 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 15 Apr 04:59 PM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • Tonight

    Tonight: Mostly clear, with a low around 48. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 63. West northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 63 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 41. Breezy, with a northwest wind 15 to 20 mph becoming northeast after midnight. Winds could gust as high as 30 mph.

    Low: 41 °F

    Clear and
    Breezy

  • Friday

    Friday: Sunny, with a high near 58. Wind chill values as low as 30 early. Windy, with a northeast wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 58 °F

    Sunny and
    Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. North wind 5 to 10 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. West southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 63. West northwest wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 41. Breezy, with a northwest wind 15 to 20 mph becoming northeast after midnight. Winds could gust as high as 30 mph.
Friday
Sunny, with a high near 58. Wind chill values as low as 30 early. Windy, with a northeast wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon. Winds could gust as high as 45 mph.
Friday Night
Mostly clear, with a low around 46. North wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Mostly sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
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:
12:42 pm PDT Apr 15, 2026
Forecast Valid:
5pm PDT Apr 15, 2026-6pm PDT Apr 22, 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