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

66°F

19°C

Humidity 36%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 29 Jul 06:59 AM PDT
Extended Forecast for

5 Miles WSW Quartz Hill CA

Extreme Heat Warning July 30, 10:00am until August 2, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 89. Breezy, with a west northwest wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Clear, with a low around 67. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Clear and
    Breezy then
    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Breezy, with a west northwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 94 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Clear, with a low around 69. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Clear and
    Breezy then
    Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 73. Breezy.

    Low: 73 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. Breezy.

    High: 93 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 89. Breezy, with a west northwest wind 10 to 20 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph.
Tonight
Clear, with a low around 67. Breezy, with a west southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 94. Breezy, with a west northwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Thursday Night
Clear, with a low around 69. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny and hot, with a high near 98. Northwest wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Clear, with a low around 72.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Clear, with a low around 73. Breezy.
Sunday
Sunny, with a high near 93. Breezy.
Sunday Night
Clear, with a low around 71. Breezy.
Monday
Sunny, with a high near 92. Breezy.
Monday Night
Clear, with a low around 70. Breezy.
Tuesday
Sunny, with a high near 94. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Quartz Hill CA
 34.62°N 118.31°W (Elev. 3599 ft)
Last Update:
1:57 am PDT Jul 29, 2026
Forecast Valid:
7am PDT Jul 29, 2026-6pm PDT Aug 4, 2026
 
Forecast Discussion
 
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