Bugs are a year-round problem. Some people think that cold weather will kill them off, but many bugs just go dormant or move inside when the weather gets colder. However, it is true that bugs become more of a nuisance as the weather gets older. They start to come out in spring and become more and more of a problem as spring turns into summer. They may be more of a problem for humans in August, since many types of insects are collecting stores of food to last through the winter.