Weather in O'Fallon, Missouri, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for O'Fallon
Overnight |
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Temperature: 64°F Wind Speed: 3 mph Wind Direction: SE Forecast: Mostly clear, with a low around 64. Southeast wind around 3 mph. |
Saturday |
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Temperature: 84°F Wind Speed: 5 to 8 mph Wind Direction: S Forecast: Scattered showers and thunderstorms. Partly sunny, with a high near 84. South wind 5 to 8 mph. Chance of precipitation is 30%. |
Saturday Night |
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Temperature: 65°F Wind Speed: 5 to 12 mph Wind Direction: SW Forecast: Showers and thunderstorms before 2am, then scattered showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 65. Southwest wind 5 to 12 mph. Chance of precipitation is 90%. |
Sunday |
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Temperature: 76°F Wind Speed: 13 mph Wind Direction: NW Forecast: Isolated rain showers before 7am. Partly sunny, with a high near 76. Northwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. |
Sunday Night |
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Temperature: 55°F Wind Speed: 2 to 8 mph Wind Direction: NW Forecast: Partly cloudy, with a low around 55. Northwest wind 2 to 8 mph. |
Monday |
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Temperature: 77°F Wind Speed: 1 to 5 mph Wind Direction: NW Forecast: Mostly sunny, with a high near 77. |
Monday Night |
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Temperature: 56°F Wind Speed: 3 mph Wind Direction: W Forecast: Mostly clear, with a low around 56. |
Tuesday |
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Temperature: 81°F Wind Speed: 5 to 10 mph Wind Direction: SW Forecast: Sunny, with a high near 81. |
Tuesday Night |
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Temperature: 61°F Wind Speed: 5 to 8 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 30%. |
Wednesday |
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Temperature: 85°F Wind Speed: 5 to 16 mph Wind Direction: S Forecast: A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 40%. |
Wednesday Night |
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Temperature: 68°F Wind Speed: 13 to 16 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 68. Chance of precipitation is 70%. |
Thursday |
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Temperature: 85°F Wind Speed: 8 to 12 mph Wind Direction: W Forecast: Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 70%. |
Thursday Night |
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Temperature: 64°F Wind Speed: 2 to 7 mph Wind Direction: W Forecast: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 40%. |
Juneteenth |
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Temperature: 85°F Wind Speed: 5 mph Wind Direction: S Forecast: A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 30%. |