St Marys Weather Forecast

    • 78
    • 93

    Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

    • 77
    • 94

    Partly Sunny

    • 77
    • 93

    Slight Chance Thunderstorms

    • 77
    • 93

    Chance Thunderstorms

    • 76
    • 93

    Chance Thunderstorms

Today 20 Jul Coastal Camden

Sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. South Winds 10 to 15 Mph. Chance of rain 40 percent. Heat index Values up to 107.

Tonight 20 Jul Coastal Camden

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the upper 70s. South Winds 10 to 15 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Marys Temperature Statistics

July Temperature

Fernandina Beach Municipal Airport (11.8 miles)

  • Lowest 13 July, 2026

    71.6 °F

  • Average July

    82.9 °F

  • Highest 6 July, 2026

    95 °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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