Community Corner

Diamond Bar's Memorial Day Weekend Weather Forecast

The local forecast for Friday, May 23 through Monday, May 26.

The National Weather Service forecast for Diamond Bar:

  • Friday: Sunny, with a high near 75. West southwest wind around 10 mph, with gusts as high as 20 mph.
  • Friday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
  • Saturday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 76. Light south southwest wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
  • Saturday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 57. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
  • Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83. Light west southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
  • Sunday Night: Clear, with a low around 61.
  • Memorial Day: Sunny, with a high near 87.
  • Monday Night: Mostly clear, with a low around 62.


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