St. Petersburg, Florida Weather:
Thursday, May 21, 2026
Sunny with a Chance of Thunderstorms
Day 90°
Night 79°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Cloudy Weather

Day

86°

Night

81°

Wind

11 mph

UV Index

12

Precipitation

25 %