St Mary's River - St Mary's Weather Forecast

    • 75
    • 91

    Chance Thunderstorms

    • 76
    • 91

    Slight Chance Thunderstorms

    • 76
    • 87

    Rain Showers Likely

    • 75
    • 84

    Partly Sunny

    • 74
    • 84

    Rain Showers Likely

    • 74
    • 85

    Chance Thunderstorms

    • 74
    • 86

    Chance Thunderstorms

Today 13 Sep Coastal Camden

Partly sunny with a chance of Showers and Thunderstorms. Highs in the lower 90s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

Tonight 13 Sep Coastal Camden

Partly cloudy with a chance of Showers and Thunderstorms this Evening, then mostly clear after midnight. Lows in the mid 70s. South Winds around 5 Mph, becoming southwest after midnight. Chance of rain 40 percent.

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St Mary's River - St Mary's Temperature Statistics

September Temperature

Fernandina Beach Municipal Airport (8.7 miles)

  • Lowest 7 September, 2026

    73.4 °F

  • Average September

    81.4 °F

  • Highest 5 September, 2026

    89.6 °F

Climate (2021–2026)

Fernandina Beach Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    62.7 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    78.3 °F
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