St. Louis, Missouri Weather:
Thursday, September 17, 2026
Cloudy Weather
Day 95°
Night 70°
Precipitation 55 %
Wind 5 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 17, 2025)
Cloudy Night

Day

91°

Night

57°

Wind

4 mph

Precipitation

0 %