10 Day Weather - O'Fallon, MO
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NightClear59°Night DetailsClear. Low temperature around 59F. Dew point will be around 52F with an average humidity of 75%. Winds will be 3 mph from the N.
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TuesdaySunny82°NightPartly Cloudy66°Day DetailsSunny. Highs in the lower 80s. Southeast winds around 5 mph becoming southwest this afternoon.Night DetailsPartly cloudy in the evening then clearing. Lows in the lower 60s. South winds around 5 mph.
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WednesdaySunny90°NightMostly Clear69°Day DetailsSunny. Highs around 90. Southwest winds around 5 mph.Night DetailsMostly clear. Lows in the upper 60s. South winds around 5 mph.
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ThursdayMostly Sunny94°Night30% Chance of Storms72°Day DetailsSunny hot with highs in the mid 90s. Southwest winds 5 to 10 mph.Night DetailsPartly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 30 percent.
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FridayMostly Sunny90°NightMostly Clear67°Day DetailsMostly clear. Highs in the lower 90s. Lows in the upper 60s.Night DetailsMostly clear. Highs in the lower 90s. Lows in the upper 60s.
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SaturdayMostly Sunny89°NightMostly Clear69°Day DetailsMostly clear. Highs in the lower 90s. Lows in the upper 60s.Night DetailsMostly clear. Highs in the lower 90s. Lows in the upper 60s.
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SundayMostly Sunny95°NightWarm and Humid75°Day DetailsMostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 105.Night DetailsMostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 105.
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MondaySunny94°NightClear74°Monday 6/17Day94°SunnyNight74°ClearDay DetailsMostly clear. Hot. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 105.Night DetailsClear. Low temperature around 74F. Dew point will be around 66F with an average humidity of 64%. Winds will be 4 mph from the S.
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Tuesday30% Chance of Rain90°Night30% Chance of Rain73°Tuesday 6/18Day90°30% Chance of RainNight73°30% Chance of RainDay DetailsSunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 90F. Dew point will be around 69F with an average humidity of 61%. Winds will be 2 mph from the S.Night DetailsClear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 73F. Dew point will be around 65F with an average humidity of 64%. Winds will be 2 mph from the SE.
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Wednesday30% Chance of Rain91°NightClear74°Wednesday 6/19Day91°30% Chance of RainNight74°ClearDay DetailsSunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 91F. Dew point will be around 69F with an average humidity of 60%. Winds will be 3 mph from the SE.Night DetailsClear. Low temperature around 74F. Dew point will be around 67F with an average humidity of 65%. Winds will be 3 mph from the SE.