Saint Johns River Mouth Weather Forecast

    • 59
    • 67

    Chance Rain Showers

    • 63
    • 65

    Breezy

    • 65
    • 68

    Partly Sunny

    • 65
    • 71

    Mostly Cloudy

    • 65
    • 72

    Partly Sunny

    • 66
    • 73

    Partly Sunny

Today 28 Mar Coastal Duval

Partly cloudy early this Morning, then becoming cloudy with a slight chance of Showers this afternoon. Windy and much cooler with Highs in the upper 60s. Temperature falling into the upper 50s late this afternoon. Northwest Winds 10 to 15 Mph Early, becoming north northeast and increasing 20 to 30 Mph late this morning. Gusts up to 45 Mph possible this afternoon. Chance of rain 20 percent.

Tonight 28 Mar Coastal Duval

Mostly cloudy and windy. Near steady temperature in the upper 50s. Northeast Winds 20 to 30 Mph with Gusts up to 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Saint Johns River Mouth Temperature Statistics

March Temperature

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

  • Lowest 18 March, 2026

    44.1 °F
  • Average March

    64.8 °F
  • Highest 23 March, 2026

    86 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    65.5 °F
  • Average 2021–2026

    72.6 °F
  • Average High 2021–2026

    80 °F
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