Old River - Rivers End Marina Weather Forecast

    • 58
    • 77

    Becoming Sunny

    • 60
    • 83

    Sunny

    • 61
    • 87

    Mostly Sunny

    • 59
    • 81

    Partly Sunny

    • 58
    • 82

    Mostly Sunny

    • 61
    • 85

    Sunny

    • 62
    • 88

    Sunny

Today 17 Sep East Bay Interior Valleys

Partly cloudy late in the morning then becoming sunny. Highs in the upper 70s. West Winds 5 to 15 Mph.

Tonight 17 Sep East Bay Interior Valleys

Mostly clear. Lows in the mid 50s. West Winds 5 to 10 Mph.

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Old River - Rivers End Marina Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (16.2 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    70.6 °F

  • Highest 9 September, 2026

    104.6 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (16.2 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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