Weather in O'Fallon, Missouri, United States

7-Day Detailed Weather Forecast for O'Fallon

Today

Temperature: 62°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Sunny. High near 62, with temperatures falling to around 56 in the afternoon. Northwest wind around 7 mph.

Tonight

Temperature: 42°F

Wind Speed: 3 mph

Wind Direction: NE

Forecast: Partly cloudy, with a low around 42. Northeast wind around 3 mph.

Wednesday

Temperature: 65°F

Wind Speed: 7 mph

Wind Direction: SE

Forecast: Mostly cloudy, with a high near 65. Southeast wind around 7 mph.

Wednesday Night

Temperature: 53°F

Wind Speed: 6 mph

Wind Direction: SW

Forecast: Mostly cloudy, with a low around 53. Southwest wind around 6 mph.

Christmas Day

Temperature: 64°F

Wind Speed: 6 mph

Wind Direction: NE

Forecast: Mostly cloudy, with a high near 64. Northeast wind around 6 mph.

Thursday Night

Temperature: 58°F

Wind Speed: 8 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 58.

Friday

Temperature: 71°F

Wind Speed: 3 to 8 mph

Wind Direction: W

Forecast: Sunny, with a high near 71.

Friday Night

Temperature: 51°F

Wind Speed: 5 mph

Wind Direction: SW

Forecast: Partly cloudy, with a low around 51.

Saturday

Temperature: 70°F

Wind Speed: 5 to 8 mph

Wind Direction: SW

Forecast: Partly sunny, with a high near 70.

Saturday Night

Temperature: 36°F

Wind Speed: 7 to 14 mph

Wind Direction: W

Forecast: Partly cloudy, with a low around 36.

Sunday

Temperature: 38°F

Wind Speed: 15 mph

Wind Direction: NW

Forecast: Mostly sunny, with a high near 38.

Sunday Night

Temperature: 19°F

Wind Speed: 12 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 19.

Monday

Temperature: 28°F

Wind Speed: 7 to 10 mph

Wind Direction: NW

Forecast: Sunny, with a high near 28.

Monday Night

Temperature: 18°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 18.