 Also this afternoon, sunshine and northeast winds 5 to 10 mph. Partly cloudy tonight, a low in the upper 60s. Mostly sunny tomorrow morning, increasing clouds by afternoon and a slight chance of showers and thunderstorms, a high in the mid-80s. Friday night, cloudy, showers and thunderstorms likely, a low in the low 70s. And on Saturday, partly sunny, a chance of showers and thunderstorms, a high near 90 degrees. 85 and sunny in downtown Alton.