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

56°F

13°C

Humidity 19%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 17 Apr 11:59 AM PDT
Extended Forecast for

11 Miles W Quartz Hill CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. Windy, with a northeast wind 25 to 35 mph decreasing to 15 to 25 mph. Winds could gust as high as 50 mph.

    High: 59 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind around 10 mph, with gusts as high as 15 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 73 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. East wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 15 mph.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72. North wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. Breezy.

    Low: 44 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A slight chance of rain. Mostly sunny, with a high near 61. Breezy.

    High: 61 °F

    Slight Chance
    Rain and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 59. Windy, with a northeast wind 25 to 35 mph decreasing to 15 to 25 mph. Winds could gust as high as 50 mph.
Tonight
Mostly clear, with a low around 45. North wind around 10 mph, with gusts as high as 15 mph.
Saturday
Sunny, with a high near 73. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 51. East wind 5 to 10 mph becoming west in the evening. Winds could gust as high as 15 mph.
Sunday
Mostly sunny, with a high near 72. North wind 5 to 15 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 44. Breezy.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 61. Breezy.
Tuesday Night
A slight chance of rain before 11pm. Partly cloudy, with a low around 42. Breezy.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 42. Breezy.
Thursday
Sunny, with a high near 63.
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
 34.67°N 118.4°W (Elev. 3599 ft)
Last Update:
12:21 pm PDT Apr 17, 2026
Forecast Valid:
1pm PDT Apr 17, 2026-6pm PDT Apr 23, 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