Weather in O'Fallon, Illinois, United States

7-Day Detailed Weather Forecast for O'Fallon

Today

Temperature: 89°F

Wind Speed: 2 to 6 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 89. Southwest wind 2 to 6 mph.

Tonight

Temperature: 62°F

Wind Speed: 1 to 5 mph

Wind Direction: E

Forecast: Partly cloudy, with a low around 62. East wind 1 to 5 mph.

Thursday

Temperature: 91°F

Wind Speed: 1 to 7 mph

Wind Direction: E

Forecast: Sunny, with a high near 91. East wind 1 to 7 mph.

Thursday Night

Temperature: 62°F

Wind Speed: 2 to 6 mph

Wind Direction: E

Forecast: Mostly clear, with a low around 62. East wind 2 to 6 mph.

Friday

Temperature: 93°F

Wind Speed: 2 to 6 mph

Wind Direction: SE

Forecast: Sunny, with a high near 93. Southeast wind 2 to 6 mph.

Friday Night

Temperature: 66°F

Wind Speed: 6 mph

Wind Direction: SE

Forecast: Partly cloudy, with a low around 66.

Saturday

Temperature: 96°F

Wind Speed: 7 mph

Wind Direction: S

Forecast: Sunny, with a high near 96.

Saturday Night

Temperature: 68°F

Wind Speed: 6 mph

Wind Direction: S

Forecast: Partly cloudy, with a low around 68.

Sunday

Temperature: 95°F

Wind Speed: 2 to 6 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 95.

Sunday Night

Temperature: 68°F

Wind Speed: 5 mph

Wind Direction: SE

Forecast: Partly cloudy, with a low around 68.

Monday

Temperature: 95°F

Wind Speed: 2 to 6 mph

Wind Direction: SE

Forecast: Mostly sunny, with a high near 95.

Monday Night

Temperature: 66°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: Partly cloudy, with a low around 66.

Tuesday

Temperature: 93°F

Wind Speed: 2 to 6 mph

Wind Direction: E

Forecast: Sunny, with a high near 93.

Tuesday Night

Temperature: 64°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: Mostly clear, with a low around 64.