Current conditions at
WHITTIER HILLS (WTHC1)
Lat: 33.984°NLon: 118.00943°WElev: 950.0ft.NA
65°F
18°C
| Humidity | 100% |
| Wind Speed | NNE 0 MPH |
| Barometer | NA |
| Dewpoint | 65°F (18°C) |
| Visibility | NA |
| Last update | 24 Sep 07:57 AM PDT |
Extended Forecast for
Diamond Bar CA
Today
High: 88 °F
Sunny
Tonight
Low: 66 °F
Mostly Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 67 °F
Patchy Fog
Saturday
High: 92 °F
Patchy Fog
then Mostly
SunnySaturday Night
Low: 68 °F
Mostly Cloudy
Sunday
High: 83 °F
Partly Sunny
Sunday Night
Low: 63 °F
Mostly Cloudy
Monday
High: 80 °F
Slight Chance
Showers
Detailed Forecast
Today
Sunny, with a high near 88. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 66. Southwest wind 5 to 10 mph becoming light west southwest in the evening.
Friday
Sunny, with a high near 91. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 67. West southwest wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 92. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 83.
Sunday Night
Mostly cloudy, with a low around 63.
Monday
A slight chance of showers. Partly sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Diamond Bar CA
34°N 117.82°W (Elev. 1014 ft)
34°N 117.82°W (Elev. 1014 ft)
7:52 am PDT Sep 24, 2026
9am PDT Sep 24, 2026-6pm PDT Sep 30, 2026
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