O'Fallon, Missouri Weather:
Monday, November 9, 2026
Cloudy Weather
Day 61°
Night 39°
Precipitation 55 %
Wind 12 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (November 9, 2025)
Cloudy Weather

Day

37°

Night

21°

Wind

18 mph

UV Index

3

Precipitation

1 %