Hazardous Weather Conditions
Current conditions at
WHITTIER HILLS (WTHC1)
Lat: 33.984°NLon: 118.00943°WElev: 950.0ft.NA
76°F
24°C
| Humidity | 87% |
| Wind Speed | NW 0 MPH |
| Barometer | NA |
| Dewpoint | 72°F (22°C) |
| Visibility | NA |
| Heat Index | 76°F (24°C) |
| Last update | 27 Aug 10:57 PM PDT |
Extended Forecast for
3 Miles WNW Diamond Bar CASimilar City Names
Extreme Heat Warning August 27, 11:32pm until August 28, 08:00pm
NOW until 8:00pm Fri

Extreme Heat Warning
Tonight

Low: 75 °F
Mostly Cloudy
Friday

High: 102 °F
Hot
Friday Night

Low: 72 °F
Mostly Clear
Saturday

High: 99 °F
Hot
Saturday Night

Low: 67 °F
Clear
Sunday

High: 91 °F
Sunny
Sunday Night

Low: 64 °F
Mostly Clear
Monday

High: 88 °F
Sunny
Detailed Forecast
Tonight
Mostly cloudy, with a low around 75. West southwest wind around 5 mph becoming calm.
Friday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 102. Heat index values as high as 106. Light south wind becoming west southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. Southwest wind 5 to 10 mph becoming light south southwest in the evening.
Saturday
Sunny and hot, with a high near 99. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon.
Saturday Night
Clear, with a low around 67. South southwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 64.
Wednesday
A slight chance of showers. Partly sunny, with a high near 89.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
A slight chance of showers. Mostly sunny, with a high near 92.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WNW Diamond Bar CASimilar City Names
34.02°N 117.85°W (Elev. 561 ft)
34.02°N 117.85°W (Elev. 561 ft)
11:26 pm PDT Aug 27, 2026
11pm PDT Aug 27, 2026-6pm PDT Sep 3, 2026



