Weather in O'Fallon, Missouri, United States

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7-Day Detailed Weather Forecast for O'Fallon

Today

Temperature: 75°F

Wind Speed: 6 mph

Wind Direction: E

Forecast: Mostly cloudy, with a high near 75. East wind around 6 mph.

Tonight

Temperature: 58°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: Mostly cloudy, with a low around 58. East wind around 5 mph.

Saturday

Temperature: 74°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: A chance of rain showers after 7am. Cloudy, with a high near 74. East wind around 5 mph.

Saturday Night

Temperature: 57°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: A chance of rain showers. Mostly cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 40%.

Sunday

Temperature: 71°F

Wind Speed: 5 mph

Wind Direction: SE

Forecast: A chance of rain showers before noon. Mostly cloudy, with a high near 71. Southeast wind around 5 mph. Chance of precipitation is 40%.

Sunday Night

Temperature: 56°F

Wind Speed: 2 to 7 mph

Wind Direction: SE

Forecast: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 20%.

Monday

Temperature: 72°F

Wind Speed: 7 to 13 mph

Wind Direction: SE

Forecast: A chance of rain showers. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.

Monday Night

Temperature: 60°F

Wind Speed: 13 to 16 mph

Wind Direction: SE

Forecast: Rain showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

Tuesday

Temperature: 72°F

Wind Speed: 10 to 16 mph

Wind Direction: S

Forecast: Rain showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.

Tuesday Night

Temperature: 53°F

Wind Speed: 9 mph

Wind Direction: S

Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 50%.

Wednesday

Temperature: 68°F

Wind Speed: 6 to 9 mph

Wind Direction: SW

Forecast: A chance of rain showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.

Wednesday Night

Temperature: 47°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: A slight chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 20%.

Thursday

Temperature: 67°F

Wind Speed: 2 to 6 mph

Wind Direction: NW

Forecast: A slight chance of rain showers before noon. Mostly sunny, with a high near 67. Chance of precipitation is 20%.

Thursday Night

Temperature: 44°F

Wind Speed: 2 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 44.