Port St Lucie - River Park Weather Forecast
- 65
- 79
Chance Thunderstorms
- 65
- 80
Slight Chance Rain Showers
- 66
- 80
Mostly Cloudy
- 67
- 81
Chance Rain Showers
- 67
- 82
Chance Thunderstorms
- 66
- 82
Chance Thunderstorms
- 64
- 82
Chance Thunderstorms
Today 30 Mar Coastal St. Lucie
Partly cloudy through late afternoon then considerable cloudiness. A slight chance of Showers early in the Morning, then a chance of Showers and a slight chance of Thunderstorms in the late morning and afternoon. Breezy. Highs in the upper 70s. East Winds 15 to 20 Mph decreasing to 10 to 15 Mph late in the afternoon and towards Sunset. Chance of rain 40 percent.
Tonight 30 Mar Coastal St. Lucie
Considerable cloudiness in the late evening and early morning then becoming partly cloudy. A slight chance of Showers. Lows in the upper 60s. East Winds 10 to 15 Mph. Chance of rain 20 percent.
Port St Lucie - River Park Temperature Statistics
March Temperature
Witham Field Airport (11.8 miles)
Lowest 19 March, 2026
55.4 °FAverage March
72.1 °FHighest 12 March, 2026
91.4 °F
Climate (2021–Present)
Witham Field Airport (11.8 miles)
Average Low 2021–2026
69.2 °FAverage 2021–2026
74.4 °FAverage High 2021–2026
82.9 °F