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 99%
Wind Speed SSW 24 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 11 Oct 08:59 PM PDT
Extended Forecast for

7 Miles WSW Quartz Hill CA

Wind Advisory October 11, 09:40pm until October 12, 05:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory October 11, 09:40pm until October 12, 05:00am

    NOW until 5:00am Mon

    Wind Advisory

  • Tonight

    Low: 45 °F

    Chance
    Showers and
    Windy

  • Columbus Day

    Columbus Day: A 50 percent chance of showers. Mostly cloudy, with a high near 51. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Chance
    Showers and
    Breezy

  • Monday Night

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

    Low: 40 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 48. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65. Breezy.

    High: 65 °F

    Sunny and
    Breezy then
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51. Breezy.

    Low: 51 °F

    Clear and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 69. Windy.

    High: 69 °F

    Sunny and
    Windy

Detailed Forecast

Tonight
A 50 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 45. Windy, with a west southwest wind 25 to 30 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 45 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Columbus Day
A 50 percent chance of showers. Mostly cloudy, with a high near 51. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 40. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Sunny, with a high near 58. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 48. North wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 65. Breezy.
Wednesday Night
Clear, with a low around 51. Breezy.
Thursday
Sunny, with a high near 69. Windy.
Thursday Night
Clear, with a low around 57. Windy.
Friday
Sunny, with a high near 70. Windy.
Friday Night
Clear, with a low around 57. Windy.
Saturday
Sunny, with a high near 71. Windy.
Saturday Night
Clear, with a low around 56. Breezy.
Sunday
Sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WSW Quartz Hill CA
 34.59°N 118.3°W (Elev. 4199 ft)
Last Update:
1:41 pm PDT Oct 11, 2026
Forecast Valid:
9pm PDT Oct 11, 2026-6pm PDT Oct 18, 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