Old River - Eucalyptus Island Weather Forecast

    • 60
    • 86

    Sunny

    • 61
    • 88

    Sunny

    • 64
    • 95

    Sunny

    • 64
    • 98

    Hot

    • 64
    • 98

    Hot

    • 62
    • 95

    Mostly Sunny

    • 61
    • 90

    Mostly Sunny

Today 13 Sep East Bay Interior Valleys

Sunny. Highs in the mid 80s. Southwest Winds 5 to 15 Mph.

Tonight 13 Sep East Bay Interior Valleys

Mostly clear. Lows around 60. Southwest Winds 5 to 15 Mph.

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Old River - Eucalyptus Island Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 8 September, 2025

    57.9 °F

  • Average September

    69.4 °F

  • Highest 1 September, 2025

    100.9 °F

Climate (2020–Present)

Livermore, Livermore Municipal Airport (17.4 miles)

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  • Average Low 2020–2025

    48.7 °F

  • Average 2020–2025

    60.6 °F

  • Average High 2020–2025

    74.2 °F
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