Weather Forecast for
Zip Code 63368 O Fallon, MO


Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 45. North wind around 5 mph becoming calm in the evening.

Monday: Sunny, with a high near 76. Calm wind becoming northwest 5 to 7 mph in the afternoon.

Monday Night: Mostly clear, with a low around 51. Light and variable wind.

Tuesday: Sunny, with a high near 83. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.

Tuesday Night: Showers likely and possibly a thunderstorm before 1am. Partly cloudy, with a low around 57. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 70%.

Wednesday: Sunny, with a high near 77.

Wednesday Night: Clear, with a low around 49.

Thursday: Sunny, with a high near 75.

Thursday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 57.

Friday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 84.

Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.

Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

Saturday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.

Sunday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

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