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

43°F

6°C

Humidity 100%
Wind Speed S 26 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill33°F (1°C)
Last update 16 Nov 11:59 AM PST
Extended Forecast for

11 Miles W Quartz Hill CA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Cloudy, with a high near 47. South southwest wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 10pm, then a chance of rain, mainly after 4am. Cloudy, with a low around 43. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Rain, mainly after 10am. High near 47. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 47 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40. West wind around 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain Likely
    then Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly between 10am and 4pm. Partly sunny, with a high near 44. West northwest wind around 10 mph, with gusts as high as 15 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 10am. Partly sunny, with a high near 47.

    High: 47 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Cloudy, with a high near 47. South southwest wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers before 10pm, then a chance of rain, mainly after 4am. Cloudy, with a low around 43. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly after 10am. High near 47. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40. West wind around 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
A 30 percent chance of rain, mainly between 10am and 4pm. Partly sunny, with a high near 44. West northwest wind around 10 mph, with gusts as high as 15 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 38.
Wednesday
Sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
A slight chance of rain after 10am. Partly sunny, with a high near 47.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Partly sunny, with a high near 48.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 53.
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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:
10:11 am PST Nov 16, 2025
Forecast Valid:
12pm PST Nov 16, 2025-6pm PST Nov 22, 2025
 
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Additional Resources

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Chance of Precipitation