BREAKING WEATHER:  AIRPORT DELAYS
Weather Forecast for
O Fallon, IL


Overnight: A chance of showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after 5am. Otherwise, cloudy, with a low around 48. Northeast wind around 6 mph. Chance of precipitation is 60%.

Wednesday
:
Showers and thunderstorms. Patchy fog before 11am. High near 62. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.

Wednesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Patchy fog after 3am. Low around 55. Southeast wind 5 to 7 mph becoming south after midnight. Chance of precipitation is 90%.

Thursday: Showers likely, mainly before 9am. Mostly cloudy, with a high near 68. West wind 5 to 10 mph becoming light south in the afternoon. Chance of precipitation is 70%.

Thursday Night: A chance of showers, with thunderstorms also possible after 9pm. Mostly cloudy, with a low around 59. Light south wind increasing to 5 to 9 mph in the evening. Chance of precipitation is 50%.

Friday: A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 78. Breezy.

Friday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 55. Chance of precipitation is 90%.

Saturday: A 50 percent chance of showers before noon. Partly sunny, with a high near 65.

Saturday Night: Partly cloudy, with a low around 41.

Sunday: Sunny, with a high near 66.

Sunday Night: Mostly clear, with a low around 48.

Monday: Sunny, with a high near 77.

Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.

Tuesday: Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Breezy. Chance of precipitation is 70%.


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