10 Day Weather - O'Fallon, MO
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FridaySunny86°NightThunderstorms66°Day DetailsSunny. Highs in the upper 80s. West winds 5 to 10 mph.Night DetailsMostly clear in the evening then mostly cloudy with showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. South winds around 5 mph. Chance of rain 90 percent.
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SaturdayThunderstorms85°Night70% Chance of Storms65°Day DetailsMostly cloudy in the morning then becoming partly sunny. A chance of thunderstorms. Showers mainly in the morning. Highs in the mid 80s. South winds 10 to 15 mph becoming southwest in the afternoon. Chance of rain 90 percent.Night DetailsMostly cloudy with a chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Lows in the mid 60s. Northwest winds 5 to 10 mph. Chance of rain 70 percent.
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Sunday50% Chance of Storms81°NightPartly Cloudy58°Day DetailsMostly cloudy in the morning then becoming partly sunny. A slight chance of thunderstorms. A chance of showers mainly in the morning. Highs in the upper 70s. North winds around 5 mph. Chance of rain 50 percent.Night DetailsPartly cloudy. A 20 percent chance of showers. Lows in the upper 50s. Highs in the upper 70s.
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MondayPartly Cloudy79°NightPartly Cloudy56°Day DetailsPartly cloudy. A 20 percent chance of showers. Lows in the upper 50s. Highs in the upper 70s.Night DetailsPartly cloudy. Lows in the upper 50s. Highs in the upper 70s.
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TuesdayPartly Cloudy76°NightPartly Cloudy61°Day DetailsPartly cloudy. Lows in the upper 50s. Highs in the upper 70s.Night DetailsPartly cloudy. Lows in the upper 50s. Highs in the upper 70s.
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WednesdayMostly Sunny82°NightMostly Clear62°Day DetailsMostly clear. Highs in the mid 80s. Lows in the lower 60s.Night DetailsMostly clear. Highs in the mid 80s. Lows in the lower 60s.
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ThursdaySunny86°NightClear68°Thursday 6/13Day86°SunnyNight68°ClearDay DetailsSunny. Highs around 90.Night DetailsClear. Low temperature around 68F. Dew point will be around 61F with an average humidity of 68%. Winds will be 4 mph from the S.
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FridaySunny91°NightMostly Clear71°Friday 6/14Day91°SunnyNight71°Mostly ClearDay DetailsSunny. High temperature around 91F. Dew point will be around 68F with an average humidity of 59%. Winds will be 3 mph from the S.Night DetailsMostly clear. Low temperature around 71F. Dew point will be around 67F with an average humidity of 70%. Winds will be 3 mph from the S.
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SaturdayMostly Sunny91°NightClear72°Saturday 6/15Day91°Mostly SunnyNight72°ClearDay DetailsMostly sunny. High temperature around 91F. Dew point will be around 67F with an average humidity of 57%. Winds will be 5 mph from the SE.Night DetailsClear. Low temperature around 72F. Dew point will be around 67F with an average humidity of 68%. Winds will be 6 mph from the SE.
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Sunday30% Chance of Rain92°Night30% Chance of Rain73°Sunday 6/16Day92°30% Chance of RainNight73°30% Chance of RainDay DetailsSunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 92F. Dew point will be around 68F with an average humidity of 56%. Winds will be 6 mph from the SE.Night DetailsClear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 73F. Dew point will be around 68F with an average humidity of 69%. Winds will be 4 mph from the S.