Saint Johns River - Great Marsh Island Weather Forecast

    • 67
    • 81

    Rain Showers Likely

    • 57
    • 82

    Rain Showers

    • 59
    • 71

    Mostly Sunny

    • 61
    • 75

    Partly Sunny

    • 65
    • 80

    Partly Sunny

    • 69
    • 88

    Mostly Cloudy

Today 1 May Coastal Duval

Partly sunny. A chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 1 May Coastal Duval

Cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the upper 60s. Northeast Winds 5 to 10 Mph, becoming southeast after midnight. Chance of rain 60 percent.

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Saint Johns River - Great Marsh Island Temperature Statistics

May Temperature

Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)

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Climate (2021–Present)

Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)

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  • Average Low 2021–2026

    65.6 °F

  • Average 2021–2026

    72.7 °F

  • Average High 2021–2026

    80 °F
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