Weather in Alton, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Alton
Overnight |
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Temperature: 20°F Wind Speed: 8 mph Wind Direction: NE Forecast: Mostly cloudy, with a low around 20. Northeast wind around 8 mph. |
Friday |
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Temperature: 41°F Wind Speed: 7 to 10 mph Wind Direction: E Forecast: Mostly cloudy, with a high near 41. East wind 7 to 10 mph. |
Friday Night |
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Temperature: 35°F Wind Speed: 8 to 12 mph Wind Direction: SE Forecast: A chance of rain after 1am. Mostly cloudy, with a low around 35. Southeast wind 8 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. |
Saturday |
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Temperature: 49°F Wind Speed: 12 to 15 mph Wind Direction: SE Forecast: Rain. Cloudy, with a high near 49. Southeast wind 12 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. |
Saturday Night |
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Temperature: 40°F Wind Speed: 5 to 14 mph Wind Direction: S Forecast: Rain likely. Mostly cloudy, with a low around 40. South wind 5 to 14 mph. Chance of precipitation is 70%. |
Sunday |
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Temperature: 54°F Wind Speed: 7 mph Wind Direction: SW Forecast: Mostly sunny. High near 54, with temperatures falling to around 49 in the afternoon. |
Sunday Night |
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Temperature: 44°F Wind Speed: 6 to 9 mph Wind Direction: SE Forecast: A chance of rain before midnight, then rain likely and a slight chance of thunderstorms. Mostly cloudy, with a low around 44. Chance of precipitation is 60%. |
Monday |
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Temperature: 59°F Wind Speed: 9 to 14 mph Wind Direction: SW Forecast: Rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 59. Chance of precipitation is 80%. |
Monday Night |
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Temperature: 33°F Wind Speed: 12 mph Wind Direction: W Forecast: A chance of rain before midnight. Mostly cloudy, with a low around 33. Chance of precipitation is 30%. |
Tuesday |
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Temperature: 45°F Wind Speed: 7 to 10 mph Wind Direction: NW Forecast: Sunny, with a high near 45. |
Tuesday Night |
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Temperature: 30°F Wind Speed: 6 mph Wind Direction: E Forecast: Mostly cloudy, with a low around 30. |
Wednesday |
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Temperature: 45°F Wind Speed: 6 to 9 mph Wind Direction: SE Forecast: A slight chance of rain. Partly sunny, with a high near 45. Chance of precipitation is 20%. |
Wednesday Night |
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Temperature: 28°F Wind Speed: 7 mph Wind Direction: N Forecast: A slight chance of rain before midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 20%. |
Thursday |
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Temperature: 38°F Wind Speed: 6 to 9 mph Wind Direction: NW Forecast: Partly sunny, with a high near 38. |