Weather in late September early October. What should I pack?

Hi all! I am planning on visiting Italy from September 25th - October 8th. I am starting my trip in Florence where we will travel around Tuscany and then end our trip to Cinque Terre. I know Cinque Terre is not in Tuscany but wanted to know the general weather temps around this time of year to get an idea of what to pack. I hear from some that it is still pretty warm but from others that it is chilly. Thank you all in advance!!