Knight Island State Park Weather Forecast

    • 55
    • 62

    Rain Showers

    • 51
    • 62

    Rain Showers Likely

    • 42
    • 56

    Slight Chance Rain Showers

    • 53
    • 61

    Partly Sunny

    • 57
    • 67

    Rain Showers Likely

    • 47
    • 64

    Rain Showers Likely

    • 42
    • 55

    Chance Rain Showers

Today 7 Oct Grand Isle

Partly sunny. Highs in the lower 50s.

Tonight 7 Oct Grand Isle

Mostly cloudy. A chance of Showers until Midnight, then Showers after midnight. Windy with Lows in the lower 50s. South Winds 20 to 30 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Knight Island State Park Temperature Statistics

October Temperature

Franklin County State Airport (11.8 miles)

  • Lowest 4 October, 2026

    63.9 °F

  • Average October

    63.9 °F

  • Highest 4 October, 2026

    63.9 °F

Climate (2021–2026)

Franklin County State Airport (11.8 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    54.2 °F
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