 Big Z Weather Service of Alton Auto Butler, where every car gets their royal treatment. All you have to do is pull in and let Alton Auto Butler do the rest. Today, clouds a high near 90. South wind 5 to 10 miles per hour. Tonight, cloudy. A few showers possible this evening and showers and storms likely overnight. A low in the middle 70s. Saturday, partly sunny. A chance of showers and storms again. High near 90. And then Sunday, Monday.