Fort George River - Fort George Island Weather Forecast

    • 72
    • 86

    Partly Sunny

    • 74
    • 85

    Mostly Sunny

    • 74
    • 84

    Chance Thunderstorms

    • 75
    • 83

    Chance Thunderstorms

    • 74
    • 84

    Chance Thunderstorms

    • 74
    • 86

    Chance Thunderstorms

Today 18 Sep Coastal Duval

Mostly sunny. Highs in the upper 80s. North Winds 5 to 10 Mph, becoming east 10 to 15 Mph this afternoon.

Tonight 18 Sep Coastal Duval

Mostly cloudy in the Evening, then clearing after midnight. Lows in the lower 70s. East Winds around 10 Mph, Diminishing to around 5 Mph after midnight.

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Fort George River - Fort George Island Temperature Statistics

September Temperature

Mayport Naval Station - Adm David L. McDonald Field (3.1 miles)

  • Lowest 15 September, 2025

    70 °F

  • Average September

    78.6 °F

  • Highest 6 September, 2025

    87.1 °F

Climate (2020–Present)

Mayport Naval Station - Adm David L. McDonald Field (3.1 miles)

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  • Average Low 2020–2025

    65.8 °F

  • Average 2020–2025

    72.8 °F

  • Average High 2020–2025

    80.1 °F
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