Saint Johns River - Sisters Creek Entrance Weather Forecast

    • 78
    • 95

    Chance Thunderstorms

    • 77
    • 95

    Chance Thunderstorms

    • 78
    • 95

    Chance Thunderstorms

    • 78
    • 95

    Chance Thunderstorms

    • 78
    • 95

    Chance Thunderstorms

    • 78
    • 93

    Chance Thunderstorms

Today 11 Aug Coastal Duval

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the mid 90s. West Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 109.

Tonight 11 Aug Coastal Duval

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Johns River - Sisters Creek Entrance Temperature Statistics

August Temperature

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

  • Lowest 8 August, 2026

    73.9 °F

  • Average August

    80.7 °F

  • Highest 1 August, 2026

    89.1 °F

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

    80.1 °F
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