Diamond Bar Weather Forecast

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    • 67

    Rain Showers

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    • 58

    Rain Showers

    • 51
    • 59

    Rain Showers

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    • 58

    Chance Rain Showers

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    Chance Rain Showers

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    Chance Rain Showers

Today 13 Nov Los Angeles County San Gabriel Valley

Partly cloudy. Highs in the mid to upper 60s.

Tonight 13 Nov Los Angeles County San Gabriel Valley

A slight chance of Showers in the Evening, then Showers likely after midnight. Lows in the mid to upper 50s. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Diamond Bar Temperature Statistics

November Temperature

Brackett Field Airport (4.3 miles)

  • Lowest 4 November, 2025

    51.8 °F

  • Average November

    69.1 °F

  • Highest 10 November, 2025

    91.4 °F

Climate (2020–Present)

Brackett Field Airport (4.3 miles)

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  • Average Low 2020–2025

    55.5 °F

  • Average 2020–2025

    67.6 °F

  • Average High 2020–2025

    75.6 °F
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