Weather in O'Fallon, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for O'Fallon
Overnight |
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Temperature: 41°F Wind Speed: 1 mph Wind Direction: E Forecast: Clear, with a low around 41. East wind around 1 mph. |
Monday |
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Temperature: 72°F Wind Speed: 2 mph Wind Direction: SE Forecast: Sunny. High near 72, with temperatures falling to around 67 in the afternoon. Southeast wind around 2 mph. |
Monday Night |
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Temperature: 45°F Wind Speed: 1 mph Wind Direction: E Forecast: Partly cloudy, with a low around 45. East wind around 1 mph. |
Tuesday |
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Temperature: 74°F Wind Speed: 2 mph Wind Direction: E Forecast: Sunny. High near 74, with temperatures falling to around 69 in the afternoon. East wind around 2 mph. |
Tuesday Night |
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Temperature: 44°F Wind Speed: 2 mph Wind Direction: NE Forecast: Clear, with a low around 44. Northeast wind around 2 mph. |
Wednesday |
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Temperature: 77°F Wind Speed: 1 mph Wind Direction: N Forecast: Sunny, with a high near 77. |
Wednesday Night |
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Temperature: 47°F Wind Speed: 0 mph Wind Direction: Forecast: Clear, with a low around 47. |
Thursday |
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Temperature: 78°F Wind Speed: 2 mph Wind Direction: NE Forecast: Sunny, with a high near 78. |
Thursday Night |
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Temperature: 49°F Wind Speed: 2 mph Wind Direction: E Forecast: Clear, with a low around 49. |
Friday |
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Temperature: 78°F Wind Speed: 2 to 7 mph Wind Direction: SE Forecast: Sunny, with a high near 78. |
Friday Night |
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Temperature: 49°F Wind Speed: 6 mph Wind Direction: SE Forecast: Mostly clear, with a low around 49. |
Saturday |
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Temperature: 80°F Wind Speed: 5 to 8 mph Wind Direction: SE Forecast: Mostly sunny, with a high near 80. |
Saturday Night |
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Temperature: 52°F Wind Speed: 2 to 7 mph Wind Direction: S Forecast: Partly cloudy, with a low around 52. |
Sunday |
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Temperature: 80°F Wind Speed: 5 mph Wind Direction: S Forecast: Mostly sunny, with a high near 80. |