Rome is a terrific city during the cooler times of year. Even after summer heat has faded most days will be blue-skied and sunny. On the rare day when thunder rumbles and the skies open, we have a few suggestions on how to enjoy a rainy day. Storms usually roll through fast and fierce in Rome, so be ready to dash inside if the sky turns dark. It is a good idea to carry a compact lightweight umbrella with you, but if you forget, just look around, you will see a vendor with an armful of inexpensive ones for sale and you will be prepared for a rainy day in Rome.