Old River - Kings Island Weather Forecast

    • 61
    • 90

    Mostly Sunny

    • 61
    • 94

    Mostly Sunny

    • 57
    • 86

    Sunny

    • 56
    • 84

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 58
    • 85

    Sunny

    • 60
    • 89

    Sunny

Today 23 Sep East Bay Interior Valleys

Sunny. Highs in the lower 90s. Northwest Winds up to 5 Mph.

Tonight 23 Sep East Bay Interior Valleys

Mostly clear. Lows around 60. West Winds up to 5 Mph in the evening. Becoming light.

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Old River - Kings Island Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (17.4 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    69.6 °F

  • Highest 9 September, 2026

    104.6 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (17.4 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74 °F
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