60-degree weather is not too cold and not too hot. However, people, in most cases, like to wear jackets. It depends on your body temperature if you want to wear warm clothes or not. But if you are concerned about your health, when you get out of your house, try to take a jacket for yourself. You can wear a jacket and a regular t-shirt. And if you feel cold, you can wear your coat. The best part of the coat is you can keep the front part open to cope with the 60-degree weather properly!