O'Fallon, Missouri Weather:
Thursday, November 5, 2026
Cloudy Weather
Day 64°
Night 46°
Precipitation 30 %
Wind 12 mph
UV Index (0 - 11+) 1
Weather Forecast History
Last Year's Weather on This Day (November 5, 2025)
Night

Day

70°

Night

34°

Wind

4 mph

Precipitation

0 %