The National Weather Service continues the heat advisory through Tuesday afternoon. Temperatures once again on Tuesday will rise to the upper 90s however high humidity will make it feel like 105 to 110 degrees.
First lady Michelle Obama will travel to Iowa on Monday with campaign stops scheduled in Iowa City and Sioux City.
Mrs. Obama will speak at the Sheraton Iowa City at 1 p.m. and the Sioux City Convention Center at 4 p.m. Both events are free and open to the public, but tickets are required.
Iowa is among nine battleground states where Democrat Barack Obama and Republican Mitt Romney are spending the vast majority of their campaign travel time and money.
Iowa was the first of the battleground states to begin voting, accepting absentee ballots and allowing in-person voting at elections offices and satellite sites.