The first thing to bear in mind, whether you are coming in the Fall or Spring semester, is that you will need comfortable footwear to sustain a busy schedule of almost daily site visits. Many former students have remarked that they have lost weight during their stay in Rome as they have had to walk much more than back home.
Generally speaking, Rome’s climate is mild; in other words, it is unusual to have an extremely cold spell and, if that happens, it would be for a brief period. It is therefore not necessary to bring a lot of heavy clothes, but you should have some gear for rainy days which are more common and more likely to occur with greater frequency in November and in the winter months generally.
If you are coming in the Fall semester, the whole of September and most of October remains relatively warm. You might need a cardigan or light jacket for early mornings and evenings. November and December are cooler and it can get pretty cold in December so you should have a jacket or coat with you for colder days and some jumpers or sweatshirts underneath. Some students have remarked that the weather here is similar to Fayetteville’s in the sense that it is changeable from day to day. You certainly need to be dressed in layers.
The weather is generally colder during the Spring semester, with January and February being the coldest months of the year. Sometimes it remains cold during the first half of March. On cold days, you might need a hat and gloves. Moreover, if you get to go on tours in the North of Italy, you will find that the temperature in northern cities is noticeably lower than in Rome.