Weather in Alton, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Alton
This Afternoon |
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Temperature: 83°F Wind Speed: 7 mph Wind Direction: W Forecast: A chance of showers and thunderstorms. Partly sunny, with a high near 83. West wind around 7 mph. Chance of precipitation is 30%. |
Tonight |
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Temperature: 67°F Wind Speed: 1 to 6 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southwest wind 1 to 6 mph. Chance of precipitation is 30%. |
Thursday |
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Temperature: 85°F Wind Speed: 1 to 5 mph Wind Direction: W Forecast: A chance of showers and thunderstorms. Partly sunny, with a high near 85. West wind 1 to 5 mph. Chance of precipitation is 50%. |
Thursday Night |
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Temperature: 69°F Wind Speed: 5 mph Wind Direction: E Forecast: Showers and thunderstorms likely before 1am, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 69. East wind around 5 mph. Chance of precipitation is 90%. |
Friday |
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Temperature: 83°F Wind Speed: 5 to 8 mph Wind Direction: S Forecast: Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 83. South wind 5 to 8 mph. Chance of precipitation is 90%. |
Friday Night |
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Temperature: 69°F Wind Speed: 2 to 7 mph Wind Direction: S Forecast: Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 70%. |
Saturday |
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Temperature: 88°F Wind Speed: 6 mph Wind Direction: SW Forecast: Showers and thunderstorms likely before 10am, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 60%. |
Saturday Night |
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Temperature: 74°F Wind Speed: 7 mph Wind Direction: S Forecast: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. Chance of precipitation is 20%. |
Sunday |
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Temperature: 96°F Wind Speed: 8 to 13 mph Wind Direction: S Forecast: Sunny, with a high near 96. |
Sunday Night |
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Temperature: 76°F Wind Speed: 7 to 12 mph Wind Direction: S Forecast: Mostly clear, with a low around 76. |
Monday |
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Temperature: 98°F Wind Speed: 6 to 12 mph Wind Direction: S Forecast: Sunny, with a high near 98. |
Monday Night |
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Temperature: 77°F Wind Speed: 6 to 12 mph Wind Direction: S Forecast: Mostly clear, with a low around 77. |
Tuesday |
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Temperature: 98°F Wind Speed: 5 to 8 mph Wind Direction: S Forecast: Sunny, with a high near 98. |
Tuesday Night |
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Temperature: 77°F Wind Speed: 3 to 7 mph Wind Direction: S Forecast: Mostly clear, with a low around 77. |