Saint Johns River - Sisters Creek Entrance Weather Forecast

    • 76
    • 86

    Chance Rain Showers

    • 75
    • 84

    Rain Showers Likely

    • 71
    • 81

    Chance Thunderstorms

    • 66
    • 78

    Mostly Sunny

    • 65
    • 78

    Mostly Sunny

    • 67
    • 82

    Partly Sunny

    • 69
    • 83

    Mostly Cloudy

Today 22 Sep Coastal Duval

Mostly sunny with a 20 percent chance of Showers. Highs in the mid 80s.

Tonight 22 Sep Coastal Duval

Mostly cloudy with a slight chance of Showers and Thunderstorms. Lows in the mid 70s. Northeast Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Johns River - Sisters Creek Entrance Temperature Statistics

September Temperature

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

  • Lowest 11 September, 2026

    78.1 °F

  • Average September

    83.6 °F

  • Highest 10 September, 2026

    90 °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 °F
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