South Beach Causeway Weather Forecast
- 76
- 83
Chance Thunderstorms
- 77
- 85
Rain Showers Likely
- 77
- 84
Thunderstorms Likely
- 78
- 84
Thunderstorms Likely
- 77
- 83
Chance Thunderstorms
- 75
- 82
Chance Rain Showers
- 75
- 82
Chance Thunderstorms
Today 21 Sep Coastal St. Lucie
Partly sunny with a chance of Showers. A slight chance of Thunderstorms late in the Morning, then a chance of Thunderstorms late in the afternoon and towards Sunset. Highs in the mid 80s. Chance of rain 40 percent.
Tonight 21 Sep Coastal St. Lucie
Considerable cloudiness early in the evening then becoming partly cloudy. 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 50 percent.
South Beach Causeway Temperature Statistics
September Temperature
Fort Pierce, St. Lucie County International Airport (4.3 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 (4.3 miles)
Average Low 2021–2026
65.9 °FAverage 2021–2026
74.7 °FAverage High 2021–2026
83.7 °F