The heat index in Marshalltown late Thursday afternoon made it feel like 98. The weatherman says there will be showers and thunderstorms Friday night into Saturday and the weather will be cooler Saturday into Sunday. Parts of the listening area had some rain and sprinkles early Friday morning. Precipitation chances according to the National Weather Service are 90% Friday night and 50% early on Saturday. Temps in the low seventies are predicted for Saturday and Sunday. A back to school forecast high of 83 on Tuesday when most schools in the listening area will resume classes.