Isolated showers tonight will be possible, mainly north of Highway 20. Rain should be brief with minimal totals.
Muggy weather will stay entrenched through the weekend in Central Iowa. Temperatures will very quickly approach 90 on Saturday, with many spots near 90 as early as noon. The heat index will again be around 97 to 100 degrees. Fans heading out to tailgate and go to the football games should wear sunscreen and frequently drink water along with the rest of the festivities.
Sunday night will finally start to see some change as a cold front moves into the state. The front will trigger storms, some of which could be strong and produce heavy rainfall. Most of the storms should be out of the way for Labor Day, especially early afternoon, but more storms will be possible overnight Monday into Tuesday.