Round Island Oceanfront Park Weather Forecast

    • 76
    • 86

    Chance Thunderstorms

    • 75
    • 87

    Rain Showers Likely

    • 74
    • 86

    Thunderstorms Likely

    • 75
    • 87

    Rain Showers

    • 76
    • 85

    Thunderstorms Likely

    • 77
    • 85

    Thunderstorms Likely

Today 18 Sep Coastal Indian River

Partly sunny with a chance of Showers and Thunderstorms. Highs in the mid 80s. Northeast Winds 10 to 15 Mph. Chance of rain 40 percent.

Tonight 18 Sep Coastal Indian River

Partly cloudy with a slight chance of Showers and Thunderstorms. Lows in the mid 70s. Northeast Winds around 5 Mph in the late evening and early morning becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    82.6 °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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