Hazardous Weather Conditions
Current conditions at
GRASS MOUNTAIN (GMTC1)
Lat: 34.64078°NLon: 118.41435°WElev: 4626.0ft.NA
80°F
27°C
| Humidity | 22% |
| Wind Speed | WNW 3 MPH |
| Barometer | NA |
| Dewpoint | 38°F (3°C) |
| Visibility | NA |
| Heat Index | 79°F (26°C) |
| Last update | 27 Aug 03:59 AM PDT |
Extended Forecast for
5 Miles WSW Quartz Hill CA
Extreme Heat Warning August 27, 04:30am until August 28, 08:00pm
NOW until 8:00pm Fri

Extreme Heat Warning
Overnight

Low: 78 °F
Mostly Cloudy
Thursday

High: 92 °F
Slight Chance
T-stormsThursday Night
Low: 78 °F
Slight Chance
Showers then
Mostly CloudyFriday
High: 91 °F
Mostly Cloudy
then Mostly
Sunny and
BreezyFriday Night
Low: 75 °F
Mostly Clear
and Breezy
then Mostly
ClearSaturday
High: 88 °F
Sunny then
Sunny and
BreezySaturday Night
Low: 68 °F
Clear and
Breezy then
ClearSunday
High: 83 °F
Sunny then
Sunny and
Breezy
Detailed Forecast
Overnight
Mostly cloudy, with a low around 78. Northwest wind around 10 mph.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 92. Northwest wind 5 to 15 mph becoming west southwest in the morning. Winds could gust as high as 20 mph.
Thursday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 78. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 91. Breezy, with a north wind 5 to 10 mph becoming west southwest 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly clear, with a low around 75. Breezy, with a west wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Saturday
Sunny, with a high near 88. Breezy.
Saturday Night
Clear, with a low around 68. Breezy.
Sunday
Sunny, with a high near 83. Breezy.
Sunday Night
Clear, with a low around 63. Breezy.
Monday
Sunny, with a high near 78. Breezy.
Monday Night
Mostly clear, with a low around 61. Breezy.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 77. Breezy.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 63. Breezy.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST
Point Forecast:
5 Miles WSW Quartz Hill CA
34.62°N 118.31°W (Elev. 3599 ft)
34.62°N 118.31°W (Elev. 3599 ft)
11:26 pm PDT Aug 26, 2026
4am PDT Aug 27, 2026-6pm PDT Sep 2, 2026



