Round Island Oceanfront Park Weather Forecast
- 75
- 86
Thunderstorms Likely
- 75
- 87
Thunderstorms Likely
- 76
- 86
Thunderstorms Likely
- 78
- 87
Rain Showers Likely
- 76
- 84
Chance Thunderstorms
- 75
- 83
Chance Thunderstorms
Today 21 Sep Coastal Indian River
Partly sunny. A slight chance of Showers and Thunderstorms late in the Morning, then a chance of Showers and Thunderstorms late in the afternoon and towards Sunset. Highs in the mid 80s. Chance of rain 30 percent.
Tonight 21 Sep Coastal Indian River
Partly cloudy through early morning then becoming mostly clear. A chance of Showers and Thunderstorms early in the Evening, then a slight chance of Showers and Thunderstorms in the late evening and early morning. Lows in the mid 70s. East Winds around 5 Mph becoming southwest late. Chance of rain 40 percent.
Round Island Oceanfront Park Temperature Statistics
September Temperature
Fort Pierce, St. Lucie County International Airport (5 miles)
Lowest 19 September, 2026
72 °FAverage September
82.4 °FHighest 5 September, 2026
94.6 °F
Climate (2021–2026)
Fort Pierce, St. Lucie County International Airport (5 miles)
Average Low 2021–2026
65.9 °FAverage 2021–2026
74.7 °FAverage High 2021–2026
83.7 °F