St. Charles, Missouri Weather:
Wednesday, September 30, 2026
Cloudy Weather
Day 77°
Night 54°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 30, 2025)
Cloudy Night

Day

91°

Night

57°

Wind

5 mph

Precipitation

0 %