Hazardous Weather Conditions
Current conditions at
GRASS MOUNTAIN (GMTC1)
Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.NA
91°F
33°C
| Humidity | 20% |
| Wind Speed | S 4 MPH |
| Barometer | NA |
| Dewpoint | 45°F (7°C) |
| Visibility | NA |
| Heat Index | 87°F (31°C) |
| Last update | 25 Aug 09:59 AM PDT |
Extended Forecast for
5 Miles SW Quartz Hill CA
Extreme Heat Warning until August 28, 08:00pm
NOW until 8:00pm Fri

Extreme Heat Warning
Today

High: 96 °F
Hot
Tonight

Low: 75 °F
Mostly Clear
Wednesday
High: 96 °F
Sunny then
Sunny and
BreezyWednesday Night
Low: 75 °F
Partly Cloudy
and Breezy
then Partly
CloudyThursday

High: 95 °F
Mostly Sunny
Thursday Night

Low: 76 °F
Mostly Cloudy
Friday

High: 92 °F
Mostly Sunny
Friday Night
Low: 76 °F
Partly Cloudy
and Breezy
then Partly
Cloudy
Detailed Forecast
Today
Mostly sunny and hot, with a high near 96. North northwest wind 5 to 10 mph becoming west southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 75. 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 a west southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 75. 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. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 76. Breezy.
Saturday
Sunny, with a high near 91. Breezy.
Saturday Night
Clear, with a low around 73. Breezy.
Sunday
Sunny, with a high near 87. Breezy.
Sunday Night
Mostly clear, with a low around 68. Breezy.
Monday
Sunny, with a high near 83. Breezy.
Basemap Options
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ABOUT THIS FORECAST
Point Forecast:
5 Miles SW Quartz Hill CA
34.6°N 118.28°W (Elev. 3271 ft)
34.6°N 118.28°W (Elev. 3271 ft)
8:36 am PDT Aug 25, 2026
10am PDT Aug 25, 2026-6pm PDT Aug 31, 2026



