5-Day Weather Forecast, O'Fallon (MO)

Sun   Dec 22

7°C | -4°C

SE 5 m/s

clear and no rain

hourly forecast

Mon   Dec 23

10°C | 2°C

SW 4 m/s

overcast and no rain

hourly forecast

Tue   Dec 24

8°C | 2°C

NE 3 m/s

7.1 mm

broken clouds and rain

hourly forecast

Wed   Dec 25

10°C | 5°C

SE 3 m/s

4.1 mm

overcast and rain

Thu   Dec 26

14°C | 7°C

SE 4 m/s

overcast and no rain

See the 10-day forecast for popular European destinations

Europe Forecast

Get more details in the extended 10 day weather forecast for O'Fallon. Check out our December climate page to see if the current temperatures in O'Fallon is typical for this time of year.