St. Louis, Missouri Weather:
Wednesday, August 19, 2026
Sunny Weather
Day 93°
Night 75°
Precipitation 10 %
Wind 5 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (August 19, 2025)
Cloudy Night

Day

95°

Night

72°

Wind

6 mph

Precipitation

25 %