Round Island Oceanfront Park Weather Forecast

    • 79
    • 88

    Rain Showers Likely

    • 77
    • 87

    Thunderstorms Likely

    • 76
    • 86

    Rain Showers Likely

    • 76
    • 87

    Thunderstorms Likely

    • 76
    • 84

    Thunderstorms Likely

    • 76
    • 85

    Thunderstorms Likely

Today 15 Sep Coastal Indian River

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 101.

Tonight 15 Sep Coastal Indian River

Partly cloudy with a chance of Thunderstorms. A chance of Showers in the late evening and early Morning, then Showers likely after midnight. Lows in the upper 70s. East Winds 5 to 10 Mph becoming northeast 10 to 15 Mph after midnight. Chance of rain 70 percent.

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Round Island Oceanfront Park Temperature Statistics

September Temperature

Fort Pierce, St. Lucie County International Airport (5 miles)

  • Lowest 8 September, 2026

    72.6 °F

  • Average September

    82.5 °F

  • Highest 5 September, 2026

    94.6 °F

Climate (2021–2026)

Fort Pierce, St. Lucie County International Airport (5 miles)

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  • Average Low 2021–2026

    65.9 °F

  • Average 2021–2026

    74.7 °F

  • Average High 2021–2026

    83.7 °F
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