O'Fallon, Missouri Weather:
Friday, October 23, 2026
Rainy Weather
Day 66°
Night 48°
Precipitation 75 %
Wind 9 mph
UV Index (0 - 11+) 1
Weather Forecast History
Last Year's Weather on This Day (October 23, 2025)
Cloudy Night

Day

64°

Night

34°

Wind

5 mph

Precipitation

0 %