Diamond Bar Weather Forecast

    • 51
    • 77

    Sunny

    • 54
    • 85

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 52
    • 73

    Partly Sunny

Today 7 Mar Los Angeles County San Gabriel Valley

Sunny. Highs in the mid 70s to lower 80s. Northeast Winds 15 to 25 Mph with Gusts to 40 Mph.

Tonight 7 Mar Los Angeles County San Gabriel Valley

Clear. Lows in the upper 40s to mid 50s. Northeast Winds 15 to 25 Mph. Gusts to 40 Mph in the evening.

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  • Temperature Real-Time

Diamond Bar Temperature Statistics

March Temperature

Brackett Field Airport (4.3 miles)

  • Lowest 3 March, 2026

    48.2 °F

  • Average March

    64.7 °F

  • Highest 1 March, 2026

    82.4 °F

Climate (2021–Present)

Brackett Field Airport (4.3 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    67.8 °F

  • Average High 2021–2026

    75.7 °F
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