The Weather Network
Weather
Maps
News
Video
|
Welcome
Weekend
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Weekend Forecast
O'Fallon, MO
This Weekend
Next Weekend
Weekend Forecast
Fri
Mar 27
9°
1°
30%
Sat
Mar 28
12°
5°
20%
Sun
Mar 29
15°
9°
30%
14 Day forecast
Radar
See all maps
Content continues below