Hourly Weather Forecast - O'Fallon, MO

30% Chance Rain Showers

40% Chance of Storms

40% Chance of Storms

40% Chance of Storms

30% Chance Rain Showers

Mostly Cloudy

Mostly Cloudy

Mostly Cloudy

Partly Cloudy

Partly Cloudy

30% Chance Rain Showers

30% Chance Rain Showers

30% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

40% Chance Rain Showers

30% Chance Rain Showers

Warm and Humid

Warm and Humid

30% Chance Rain Showers