Port St. Lucie, Florida Weather:
Sunday, September 20, 2026
Sunny with a Chance of Thunderstorms
Day 88°
Night 70°
Precipitation 80 %
Wind 6 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (September 20, 2025)
Cloudy Night

Day

86°

Night

73°

Wind

7 mph

Precipitation

4 %