St. Louis, Missouri Weather:
Wednesday, September 16, 2026
Sunny with a Chance of Thunderstorms
Day 97°
Night 72°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (September 16, 2025)
Night

Day

93°

Night

63°

Wind

5 mph

Precipitation

0 %