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 12 mph Wind Direction: S Forecast: Sunny, with a high near 93. Heat index values as high as 107. South wind 3 to 12 mph. |
Tonight |
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Temperature: 75°F Wind Speed: 5 to 10 mph Wind Direction: S Forecast: Mostly clear, with a low around 75. Heat index values as high as 110. South wind 5 to 10 mph. |
Monday |
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Temperature: 95°F Wind Speed: 5 to 13 mph Wind Direction: S Forecast: Sunny, with a high near 95. Heat index values as high as 110. South wind 5 to 13 mph. |
Monday Night |
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Temperature: 75°F Wind Speed: 5 to 13 mph Wind Direction: S Forecast: Clear, with a low around 75. Heat index values as high as 109. South wind 5 to 13 mph. |
Tuesday |
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Temperature: 96°F Wind Speed: 5 to 9 mph Wind Direction: S Forecast: Sunny, with a high near 96. South wind 5 to 9 mph. |
Tuesday Night |
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Temperature: 76°F Wind Speed: 3 to 9 mph Wind Direction: S Forecast: Clear, with a low around 76. |
Wednesday |
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Temperature: 96°F Wind Speed: 3 to 8 mph Wind Direction: S Forecast: Sunny, with a high near 96. |
Wednesday Night |
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Temperature: 77°F Wind Speed: 2 to 8 mph Wind Direction: S Forecast: Mostly clear, with a low around 77. |
Thursday |
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Temperature: 95°F Wind Speed: 2 to 7 mph Wind Direction: S Forecast: Sunny, with a high near 95. |
Thursday Night |
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Temperature: 76°F Wind Speed: 1 to 7 mph Wind Direction: S Forecast: Mostly clear, with a low around 76. |
Friday |
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Temperature: 94°F Wind Speed: 1 to 7 mph Wind Direction: S Forecast: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Chance of precipitation is 20%. |
Friday Night |
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Temperature: 76°F Wind Speed: 1 to 7 mph Wind Direction: S Forecast: A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. Chance of precipitation is 20%. |
Independence Day |
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Temperature: 93°F Wind Speed: 2 to 6 mph Wind Direction: S Forecast: Sunny, with a high near 93. |
Saturday Night |
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Temperature: 75°F Wind Speed: 1 to 6 mph Wind Direction: S Forecast: Mostly clear, with a low around 75. |