Brightside Weather Forecast

    • 69
    • 95

    Becoming Sunny

    • 61
    • 88

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

    • 54
    • 72

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

Today 9 Sep East Bay Hills

Partly cloudy in the morning then becoming sunny. Highs around 100. North Winds 5 to 10 Mph.

Tonight 9 Sep East Bay Hills

Partly cloudy in the evening then becoming mostly clear. Lows in the lower 70s. West Winds 5 to 10 Mph.

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Brightside Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (8.7 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    66.4 °F

  • Highest 5 September, 2026

    82.7 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74.1 °F
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