Weather in O'Fallon, Missouri, United States

7-Day Detailed Weather Forecast for O'Fallon

Today

Temperature: 48°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: Rain after 11am. Cloudy. High near 48, with temperatures falling to around 44 in the afternoon. East wind around 5 mph. Chance of precipitation is 90%.

Tonight

Temperature: 30°F

Wind Speed: 6 to 10 mph

Wind Direction: NW

Forecast: Rain before midnight. Mostly cloudy, with a low around 30. Northwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

Thanksgiving Day

Temperature: 41°F

Wind Speed: 10 mph

Wind Direction: NW

Forecast: Mostly sunny, with a high near 41. Northwest wind around 10 mph, with gusts as high as 21 mph.

Thursday Night

Temperature: 23°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 23. Northwest wind around 7 mph.

Friday

Temperature: 35°F

Wind Speed: 7 to 10 mph

Wind Direction: NW

Forecast: Sunny. High near 35, with temperatures falling to around 31 in the afternoon. Northwest wind 7 to 10 mph, with gusts as high as 22 mph.

Friday Night

Temperature: 20°F

Wind Speed: 5 mph

Wind Direction: W

Forecast: Partly cloudy, with a low around 20.

Saturday

Temperature: 32°F

Wind Speed: 5 mph

Wind Direction: W

Forecast: Snow likely. Mostly cloudy, with a high near 32. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Saturday Night

Temperature: 17°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: Mostly cloudy, with a low around 17.

Sunday

Temperature: 30°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Sunny, with a high near 30.

Sunday Night

Temperature: 15°F

Wind Speed: 5 mph

Wind Direction: W

Forecast: Mostly clear, with a low around 15.

Monday

Temperature: 34°F

Wind Speed: 7 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 34.

Monday Night

Temperature: 20°F

Wind Speed: 3 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 20.

Tuesday

Temperature: 37°F

Wind Speed: 2 to 6 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 37.

Tuesday Night

Temperature: 24°F

Wind Speed: 6 mph

Wind Direction: SW

Forecast: Partly cloudy, with a low around 24.