National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

WHITTIER HILLS (WTHC1)

Lat: 33.984°NLon: 118.00943°WElev: 950.0ft.

NA

74°F

23°C

Humidity 73%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 65°F (18°C)
Visibility NA
Last update 22 Sep 09:57 AM PDT
Extended Forecast for

2 Miles WSW Diamond Bar CA

  • Today

    Today: Sunny, with a high near 87. Southwest wind 5 to 10 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. West southwest wind 5 to 10 mph becoming east after midnight.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. West southwest wind 5 to 10 mph becoming light after midnight.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Light west southwest wind increasing to 5 to 10 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63.

    Low: 63 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 79.

    High: 79 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 67. West southwest wind 5 to 10 mph becoming east after midnight.
Tuesday
Sunny, with a high near 92. East wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 66. West southwest wind 5 to 10 mph becoming light after midnight.
Wednesday
Sunny, with a high near 86. Light west southwest wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny, with a high near 82.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 63.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 79.
Friday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 62.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 81.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 61.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Diamond Bar CA
 34°N 117.85°W (Elev. 679 ft)
Last Update:
6:01 am PDT Sep 22, 2025
Forecast Valid:
10am PDT Sep 22, 2025-6pm PDT Sep 28, 2025
 
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