Current conditions at

GRASS MOUNTAIN (GMTC1)

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

NA

44°F

7°C

Humidity 36%
Wind Speed E 5 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 31 Dec 04:59 AM PST
Extended Forecast for

11 Miles W Quartz Hill CA

Flood Watch December 31, 10:00pm until January 1, 10:00pm
Click here for hazard details and duration
Flood Watch
  • Overnight

    Overnight: A 50 percent chance of rain.  Cloudy, with a low around 42. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    and Breezy

  • Wednesday

    Wednesday: Rain, mainly after 10am.  High near 45. Wind chill values as low as 25. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 45 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain before 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall.  Low around 40. Wind chill values as low as 30. Breezy, with an east northeast wind 15 to 25 mph, with gusts as high as 40 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 40 °F

    Heavy Rain
    and Breezy

  • New Year's Day

    New Year's Day: Showers and possibly a thunderstorm before 10am, then rain, mainly between 10am and 4pm. Some of the storms could produce heavy rainfall.  High near 47. East southeast wind around 15 mph becoming south southwest in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 47 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 45. South southwest wind around 15 mph, with gusts as high as 20 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain after 10am.  Mostly cloudy, with a high near 48.

    High: 48 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely.  Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly before 4am.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain Likely

Detailed Forecast

Overnight
A 50 percent chance of rain. Cloudy, with a low around 42. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 10am. High near 45. Wind chill values as low as 25. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain before 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Low around 40. Wind chill values as low as 30. Breezy, with an east northeast wind 15 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
New Year's Day
Showers and possibly a thunderstorm before 10am, then rain, mainly between 10am and 4pm. Some of the storms could produce heavy rainfall. High near 47. East southeast wind around 15 mph becoming south southwest in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 45. South southwest wind around 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain after 10am. Mostly cloudy, with a high near 48.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45.
Saturday
Rain likely. Mostly cloudy, with a high near 48.
Saturday Night
Rain likely, mainly before 4am. Mostly cloudy, with a low around 46.
Sunday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 47.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 44.
Monday
A chance of rain. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain. Mostly cloudy, with a low around 43.
Tuesday
A chance of rain. Mostly cloudy, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles W Quartz Hill CA
 34.65°N 118.43°W (Elev. 3832 ft)
3:32 am PST Dec 31, 2025
5am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
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Additional Resources

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