Saint Johns River - Great Marsh Island Rainfall Forecast

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Saint Johns River - Great Marsh Island Rainfall Statistics

September Rainfall

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

  • Total Rainfall September

    0.8in

  • Daily Average September

    0.1in

  • Wettest Day 9 September, 2025

    0.4in

  • Wet Days September

    3/18 (17%)

Climate (2010–Present)

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

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  • Annual Average 2020–2024

    47.1in

  • Monthly Average 2020–2025

    4in

  • Daily Average 2020–2025

    0.1in

  • Wettest Day 9 September, 2024

    4.9in
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