Current conditions at

GRASS MOUNTAIN (GMTC1)

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

NA

97°F

36°C

Humidity 15%
Wind Speed SSW 14 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Heat Index93°F (34°C)
Last update 25 Aug 01:59 PM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

Extreme Heat Warning August 25, 02:36pm until August 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 25, 02:36pm until August 28, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 96 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 68. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Breezy, with an east wind 5 to 10 mph becoming west southwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.

    High: 96 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 95 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 69. Breezy.

    Low: 69 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 93. Breezy.

    High: 93 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 74. Breezy.

    Low: 74 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 96. West southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 68. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 96. Breezy, with an east wind 5 to 10 mph becoming west southwest 15 to 20 mph in the morning. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 69. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 95. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Thursday Night
Mostly cloudy, with a low around 69. Breezy.
Friday
Mostly sunny, with a high near 93. Breezy.
Friday Night
Partly cloudy, with a low around 74. Breezy.
Saturday
Sunny, with a high near 92. Breezy.
Saturday Night
Mostly clear, with a low around 71. Breezy.
Sunday
Sunny, with a high near 88. Breezy.
Sunday Night
Mostly clear, with a low around 67. Breezy.
Monday
Sunny, with a high near 84. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.28°W (Elev. 3340 ft)
12:31 pm PDT Aug 25, 2026
2pm PDT Aug 25, 2026-6pm PDT Aug 31, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database