South Bass Island State Park Weather Forecast

    • 67
    • 72

    Mostly Sunny

    • 65
    • 71

    Mostly Sunny

    • 65
    • 72

    Mostly Sunny

    • 66
    • 74

    Mostly Sunny

    • 66
    • 76

    Mostly Sunny

    • 64
    • 72

    Partly Sunny

    • 63
    • 68

    Chance Rain Showers

Today 14 Sep Ottawa

Patchy fog this morning. Mostly sunny. Highs in the upper 70s. East Winds 5 to 10 Mph.

Tonight 14 Sep Ottawa

Mostly clear. Lows around 60. East Winds 5 to 10 Mph.

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South Bass Island State Park Temperature Statistics

September Temperature

Port Clinton Carl R Keller Field Airport (8.7 miles)

  • Lowest 8 September, 2025

    48.2 °F

  • Average September

    63.3 °F

  • Highest 3 September, 2025

    80.6 °F

Climate (2020–Present)

Port Clinton Carl R Keller Field Airport (8.7 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    60.3 °F
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