Nassau River - Mesa Marsh Weather Forecast

    • 79
    • 84

    Slight Chance Thunderstorms

    • 79
    • 84

    Chance Thunderstorms

    • 79
    • 84

    Rain Showers Likely

    • 79
    • 85

    Chance Thunderstorms

    • 79
    • 86

    Chance Thunderstorms

    • 79
    • 87

    Slight Chance Thunderstorms

Today 6 Aug Coastal Nassau

Partly sunny. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Southeast Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 6 Aug Coastal Nassau

Mostly cloudy with a slight chance of Showers and Thunderstorms. Lows in the mid 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nassau River - Mesa Marsh Temperature Statistics

August Temperature

Fernandina Beach Municipal Airport (5 miles)

  • Lowest 1 August, 2026

    77 °F

  • Average August

    80.3 °F

  • Highest 1 August, 2026

    91.4 °F

Climate (2021–2026)

Fernandina Beach Municipal Airport (5 miles)

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  • Average Low 2021–2026

    62.8 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    78.3 °F
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