Hazardous Weather Conditions
Current conditions at
WHITTIER HILLS (WTHC1)
Lat: 33.984°NLon: 118.00943°WElev: 950.0ft.NA
68°F
20°C
| Humidity | 29% |
| Wind Speed | NE 4 MPH |
| Barometer | NA |
| Dewpoint | 34°F (1°C) |
| Visibility | NA |
| Last update | 15 Oct 04:57 AM PDT |
Extended Forecast for
Diamond Bar CA
Red Flag Warning until October 17, 08:00pm
NOW until 8:00pm Sat

Red Flag Warning
Today

High: 86 °F
Sunny
Tonight

Low: 68 °F
Clear
Friday

High: 90 °F
Sunny and
BreezyFriday Night

Low: 69 °F
Mostly Clear
Saturday

High: 87 °F
Sunny
Saturday Night

Low: 65 °F
Mostly Clear
Sunday

High: 84 °F
Sunny
Sunday Night

Low: 63 °F
Clear
Detailed Forecast
Today
Sunny, with a high near 86. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tonight
Clear, with a low around 68. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 90. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 69. Northeast wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 87. Northeast wind 5 to 15 mph becoming southeast in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 84.
Sunday Night
Clear, with a low around 63.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 60.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 74.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 56.
Wednesday
A chance of showers. Partly sunny, with a high near 70.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Diamond Bar CA
34°N 117.82°W (Elev. 1014 ft)
34°N 117.82°W (Elev. 1014 ft)
1:31 am PDT Oct 15, 2026
6am PDT Oct 15, 2026-6pm PDT Oct 21, 2026



