Parking In Downtown Savannah
Parking is free on the street after 5:00 on week days and all weekend. The parking garages also charge less for nights and weekends. If you park downtown during the day, make sure you keep an eye on the signs that tell you how many hours you can park. Do not forget to feed the meter.
You can find all your options here http://www.savannahga.gov/DocumentCenter/View/166