Nassau Sound - Simpson Creek Entrance Weather Forecast

    • 47
    • 56

    Decreasing Clouds

    • 49
    • 65

    Mostly Sunny

    • 47
    • 62

    Sunny

    • 51
    • 64

    Mostly Sunny

    • 55
    • 68

    Partly Sunny

    • 53
    • 69

    Partly Sunny

Today 9 Dec Coastal Duval

Mostly sunny. Highs in the upper 50s. North Winds 10 to 15 Mph.

Tonight 9 Dec Coastal Duval

Mostly clear. Lows in the lower 40s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nassau Sound - Simpson Creek Entrance Temperature Statistics

December Temperature

Mayport Naval Station - Adm David L. McDonald Field (6.2 miles)

  • Lowest 4 December, 2025

    48 °F
  • Average December

    61.5 °F
  • Highest 5 December, 2025

    80.1 °F

Climate (2020–Present)

Mayport Naval Station - Adm David L. McDonald Field (6.2 miles)

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  • Average Low 2020–2025

    65.6 °F
  • Average 2020–2025

    72.7 °F
  • Average High 2020–2025

    80.1 °F
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