Weather in Diamond Bar, California as of 06 October, 2025. Temperature, rain and forecast for this week.

The following widget shows the weather in Diamond Bar, California as of 06 October, 2025. Click on the widget to open the weather forecast for Diamond Bar. Please note: the weather in Diamond Bar may change in any second, so make your decisions wisely and follow the news.

DIAMOND BAR WEATHER

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Good weather and PEACE to everyone!

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