Saint Johns River - Acosta Bridge Weather Forecast

    • 36
    • 71

    Decreasing Clouds

    • 38
    • 51

    Partly Sunny

    • 46
    • 63

    Mostly Sunny

    • 53
    • 69

    Mostly Cloudy

    • 57
    • 75

    Partly Sunny

    • 54
    • 74

    Partly Sunny

Today 14 Dec Coastal Duval

Mostly sunny. Highs in the lower 70s. Temperature falling into the lower 60s this afternoon. West Winds 10 to 15 Mph, becoming northwest 15 to 20 Mph this afternoon.

Tonight 14 Dec Coastal Duval

Mostly clear and Breezy, cooler with Lows in the upper 30s. North Winds 15 to 25 Mph with Gusts up to 40 Mph.

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Saint Johns River - Acosta Bridge Temperature Statistics

December Temperature

Jacksonville Naval Air Station (5.6 miles)

  • Lowest 9 December, 2025

    45 °F

  • Average December

    58.6 °F

  • Highest 5 December, 2025

    79 °F

Climate (2020–Present)

Jacksonville Naval Air Station (5.6 miles)

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  • Average Low 2020–2025

    64.9 °F

  • Average 2020–2025

    72.5 °F

  • Average High 2020–2025

    81 °F
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