Weather Forecast for
Zip Code 62269 O Fallon, IL


This Afternoon: Mostly sunny, with a high near 66. Northwest wind around 15 mph, with gusts as high as 23 mph.

Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 41. Northwest wind 6 to 11 mph becoming light north after midnight.

Thursday: Sunny, with a high near 67. Calm wind becoming northwest around 5 mph in the afternoon.

Thursday Night: A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 46. West wind 3 to 6 mph.

Friday: Mostly sunny, with a high near 62. North wind 6 to 9 mph.

Friday Night: Partly cloudy, with a low around 40.

Saturday: Mostly sunny, with a high near 63.

Saturday Night: Mostly clear, with a low around 42.

Sunday: Sunny, with a high near 70.

Sunday Night: A 20 percent chance of showers. Partly cloudy, with a low around 52.

Monday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 75.

Monday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 51.

Tuesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 77.

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