Nassau Sound Weather Forecast

    • 79
    • 87

    Thunderstorms Likely

    • 78
    • 83

    Thunderstorms

    • 79
    • 84

    Thunderstorms Likely

    • 79
    • 85

    Chance Thunderstorms

    • 79
    • 88

    Chance Thunderstorms

    • 80
    • 89

    Chance Thunderstorms

Today 22 Jul Coastal Duval

Mostly sunny with a chance of Showers and Thunderstorms. Highs in the mid 90s. West Winds around 5 Mph, becoming northeast this afternoon. Chance of rain 50 percent. Heat index Values up to 110.

Tonight 22 Jul Coastal Duval

Mostly cloudy with Showers and Thunderstorms likely in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nassau Sound Temperature Statistics

July Temperature

Mayport Naval Station - Adm David L. McDonald Field (6.8 miles)

  • Lowest 11 July, 2025

    75.7 °F

  • Average July

    86.3 °F

  • Highest 11 July, 2025

    99.6 °F

Climate (2020–Present)

Mayport Naval Station - Adm David L. McDonald Field (6.8 miles)

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  • Average Low 2020–2025

    65.8 °F

  • Average 2020–2025

    72.7 °F

  • Average High 2020–2025

    80.1 °F
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