Often it melts quickly. Another dramatic form of weather that Iowans occasionally experience is tornadoes. Tornadoes may develop in the spring, but most Iowans have never seen one. Part of the reason for this is that the Weather Service is able to predict when tornadoes are most likely to occur. By moving to basements or protected areas of buildings away from windows, people are generally able to avoid injury if a tornado develops.
Blue jeans are very common.
Americans also entertain informally, so formal attire is almost never a requirement. The climate in Iowa requires a variety of clothing. It is important to be prepared for the season in which you arrive. Students are expected to attend class even on days when it is raining or snowing, or very hot and humid. You will probably want the following items.