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: 46°F Wind Speed: 20 mph Wind Direction: S Forecast: A slight chance of rain. Cloudy. Low around 46, with temperatures rising to around 52 overnight. South wind around 20 mph, with gusts as high as 32 mph. Chance of precipitation is 20%. |
Thursday |
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Temperature: 55°F Wind Speed: 14 to 21 mph Wind Direction: SW Forecast: Rain between 7am and 4pm. Mostly cloudy. High near 55, with temperatures falling to around 44 in the afternoon. Southwest wind 14 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. |
Thursday Night |
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Temperature: 23°F Wind Speed: 15 to 20 mph Wind Direction: W Forecast: Partly cloudy, with a low around 23. West wind 15 to 20 mph, with gusts as high as 33 mph. |
Friday |
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Temperature: 39°F Wind Speed: 8 to 14 mph Wind Direction: SW Forecast: Sunny, with a high near 39. Southwest wind 8 to 14 mph, with gusts as high as 22 mph. |
Friday Night |
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Temperature: 32°F Wind Speed: 9 to 14 mph Wind Direction: S Forecast: Partly cloudy, with a low around 32. South wind 9 to 14 mph, with gusts as high as 23 mph. |
Saturday |
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Temperature: 55°F Wind Speed: 9 to 14 mph Wind Direction: SW Forecast: Mostly sunny. High near 55, with temperatures falling to around 50 in the afternoon. |
Saturday Night |
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Temperature: 27°F Wind Speed: 3 to 8 mph Wind Direction: NW Forecast: Partly cloudy, with a low around 27. |
Sunday |
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Temperature: 43°F Wind Speed: 6 mph Wind Direction: N Forecast: Mostly sunny, with a high near 43. |
Sunday Night |
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Temperature: 29°F Wind Speed: 7 mph Wind Direction: E Forecast: Mostly cloudy, with a low around 29. |
Monday |
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Temperature: 46°F Wind Speed: 7 to 10 mph Wind Direction: SE Forecast: Partly sunny, with a high near 46. |
Monday Night |
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Temperature: 41°F Wind Speed: 9 mph Wind Direction: S Forecast: Mostly cloudy, with a low around 41. |
Tuesday |
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Temperature: 59°F Wind Speed: 9 mph Wind Direction: S Forecast: Partly sunny, with a high near 59. |
Tuesday Night |
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Temperature: 48°F Wind Speed: 7 mph Wind Direction: SE Forecast: Mostly cloudy, with a low around 48. |
Wednesday |
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Temperature: 63°F Wind Speed: 9 mph Wind Direction: S Forecast: A slight chance of rain after noon. Mostly cloudy, with a high near 63. Chance of precipitation is 20%. |