Alton, IL
This Afternoon: Sunny, with a high near 90. South wind around 5 mph.
Sunday: Sunny, with a high near 93. Heat index values as high as 101. South wind 5 to 14 mph.
Sunday Night: Mostly clear, with a low around 75. South wind 7 to 11 mph becoming east after midnight.
Monday: Mostly sunny, with a high near 95. Southwest wind 7 to 9 mph.
Monday Night: Partly cloudy, with a low around 77.
Tuesday: Mostly sunny, with a high near 94.
Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75.
Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. Chance of precipitation is 30%.
Wednesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Thursday: Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Friday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
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