10 Day Weather - O'Fallon, IL
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NightMostly Clear66°Night DetailsMostly clear. Lows in the lower 60s. West winds 5 to 10 mph.
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ThursdaySunny83°NightClear62°Day DetailsSunny. Highs in the lower 80s. Northwest winds 10 to 15 mph with gusts up to 25 mph.Night DetailsClear. Lows in the upper 50s. Northwest winds 10 to 15 mph becoming west around 5 mph after midnight.
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FridaySunny83°NightPartly Cloudy63°Day DetailsSunny. Highs in the lower 80s. Northwest winds 10 to 15 mph with gusts up to 25 mph.Night DetailsPartly cloudy in the evening then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Northwest winds 5 to 10 mph becoming southwest after midnight. Chance of rain 20 percent.
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Saturday50% Chance of Storms82°NightPartly Cloudy64°Day DetailsPartly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.Night DetailsPartly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 20 percent.
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SundayMostly Sunny80°NightMostly Clear61°Day DetailsMostly sunny with a 20 percent chance of showers. Highs around 80.Night DetailsMostly clear. Lows in the upper 50s. Highs in the upper 70s.
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MondayMostly Sunny79°NightMostly Clear62°Day DetailsMostly clear. Lows in the upper 50s. Highs in the upper 70s.Night DetailsMostly clear. Lows in the upper 50s. Highs in the upper 70s.
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TuesdayPartly Cloudy79°NightPartly Cloudy64°Day DetailsPartly cloudy. Highs in the lower 80s. Lows in the lower 60s.Night DetailsPartly cloudy. Highs in the lower 80s. Lows in the lower 60s.
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WednesdayMostly Sunny85°NightClear67°Wednesday 6/12Day85°Mostly SunnyNight67°ClearDay DetailsMostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent.Night DetailsClear. Low temperature around 67F. Dew point will be around 62F with an average humidity of 72%. Winds will be 3 mph from the S.
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ThursdaySunny89°NightClear70°Thursday 6/13Day89°SunnyNight70°ClearDay DetailsSunny. High temperature around 89F. Dew point will be around 63F with an average humidity of 54%. Winds will be 3 mph from the SW.Night DetailsClear. Low temperature around 70F. Dew point will be around 65F with an average humidity of 69%. Winds will be 2 mph from the S.
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FridaySunny90°NightClear71°Friday 6/14Day90°SunnyNight71°ClearDay DetailsSunny. High temperature around 90F. Dew point will be around 64F with an average humidity of 53%. Winds will be 1 mph from the S.Night DetailsClear. Low temperature around 71F. Dew point will be around 65F with an average humidity of 68%. Winds will be 2 mph from the S.