Saint Johns River Mouth Weather Forecast

    • 79
    • 85

    Partly Sunny

    • 79
    • 85

    Chance Rain Showers

    • 79
    • 86

    Slight Chance Thunderstorms

    • 79
    • 87

    Chance Thunderstorms

    • 79
    • 87

    Chance Thunderstorms

    • 79
    • 88

    Slight Chance Thunderstorms

Today 2 Jul Coastal Duval

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Northeast Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 2 Jul Coastal Duval

Partly cloudy. Lows in the mid 70s. East Winds 10 to 15 Mph.

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Saint Johns River Mouth Temperature Statistics

July Temperature

Mayport Naval Station - Adm David L. McDonald Field (1.9 miles)

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Climate (2021–2026)

Mayport Naval Station - Adm David L. McDonald Field (1.9 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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