Weather in O'Fallon, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for O'Fallon
Today |
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Temperature: 93°F Wind Speed: 3 to 9 mph Wind Direction: S Forecast: Sunny, with a high near 93. South wind 3 to 9 mph. |
Tonight |
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Temperature: 75°F Wind Speed: 5 to 8 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. Southwest wind 5 to 8 mph. Chance of precipitation is 30%. |
Sunday |
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Temperature: 89°F Wind Speed: 5 to 9 mph Wind Direction: SW Forecast: Showers and thunderstorms likely. Partly sunny. High near 89, with temperatures falling to around 84 in the afternoon. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. |
Sunday Night |
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Temperature: 73°F Wind Speed: 2 to 7 mph Wind Direction: SW Forecast: Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 73. Southwest wind 2 to 7 mph. Chance of precipitation is 60%. |
Monday |
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Temperature: 89°F Wind Speed: 5 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 89. West wind around 5 mph. Chance of precipitation is 20%. |
Monday Night |
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Temperature: 71°F Wind Speed: 3 mph Wind Direction: N Forecast: A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 71. Chance of precipitation is 20%. |
Tuesday |
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Temperature: 91°F Wind Speed: 5 mph Wind Direction: N Forecast: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Chance of precipitation is 20%. |
Tuesday Night |
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Temperature: 72°F Wind Speed: 5 mph Wind Direction: SE Forecast: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%. |
Wednesday |
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Temperature: 89°F Wind Speed: 5 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%. |
Wednesday Night |
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Temperature: 71°F Wind Speed: 5 mph Wind Direction: SE Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%. |
Thursday |
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Temperature: 90°F Wind Speed: 5 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%. |
Thursday Night |
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Temperature: 72°F Wind Speed: 5 mph Wind Direction: S Forecast: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 40%. |
Friday |
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Temperature: 91°F Wind Speed: 2 to 6 mph Wind Direction: S Forecast: A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 40%. |
Friday Night |
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Temperature: 72°F Wind Speed: 2 to 6 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%. |