St. Louis, Missouri Weather:
Sunday, September 20, 2026
Cloudy Weather
Day 93°
Night 72°
Precipitation 55 %
Wind 7 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 20, 2025)
Stormy Weather

Day

84°

Night

66°

Wind

6 mph

Precipitation

55 %