St Marys Weather Forecast

    • 69
    • 89

    Mostly Cloudy

    • 72
    • 84

    Partly Sunny

    • 74
    • 85

    Slight Chance Thunderstorms

    • 74
    • 85

    Chance Thunderstorms

    • 73
    • 85

    Chance Thunderstorms

    • 71
    • 85

    Chance Thunderstorms

Today 29 Sep Coastal Camden

Areas of dense fog this morning. Mostly sunny. Visibility one quarter mile or less at Times this morning. Highs in the upper 80s. Southwest Winds around 5 Mph, becoming southeast this afternoon.

Tonight 29 Sep Coastal Camden

Mostly cloudy. Lows around 70. Southeast Winds 5 to 10 Mph.

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St Marys Temperature Statistics

September Temperature

Fernandina Beach Municipal Airport (11.8 miles)

  • Lowest 26 September, 2026

    60.8 °F

  • Average September

    79.8 °F

  • Highest 13 September, 2026

    91.4 °F

Climate (2021–2026)

Fernandina Beach Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    62.8 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    78.3 °F
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