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

63°F

17°C

Humidity 36%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 08 Feb 12:59 PM PST
Extended Forecast for

11 Miles WSW Quartz Hill CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 69. Northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 68. Northwest wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph.

    High: 68 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 48. North northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 55. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 10pm. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.

    Low: 43 °F

    Rain Likely
    and Breezy

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly before 4pm. Partly sunny, with a high near 52. Breezy.

    High: 52 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm. Partly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 10am. Mostly sunny, with a high near 54.

    High: 54 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 69. Northeast wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 47. North northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 68. Northwest wind around 10 mph becoming north northeast in the morning. Winds could gust as high as 15 mph.
Monday Night
Mostly cloudy, with a low around 48. North northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 15 mph.
Tuesday
A 30 percent chance of rain, mainly after 4pm. Mostly cloudy, with a high near 55. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of rain, mainly before 4pm. Partly sunny, with a high near 52. Breezy.
Wednesday Night
A slight chance of rain before 10pm. Partly cloudy, with a low around 37.
Thursday
A slight chance of rain after 10am. Mostly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 39.
Saturday
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Quartz Hill CA
 34.63°N 118.39°W (Elev. 3228 ft)
Last Update:
1:31 pm PST Feb 8, 2026
Forecast Valid:
1pm PST Feb 8, 2026-6pm PST Feb 14, 2026
 
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Additional Resources

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Chance of Precipitation