Weather lowdown. Along with July, August is the hottest month of the year for Florence, Italy, when temperatures are at their highest and cloud coverage and rainfall are at their lowest. At this time of year, the average temperature for the city begins at 25.5Â°C, created by highs of 32Â°C during the daytime and lows of 19Â°C after dark.
A century is 100 years, a millennium is a thousands years, and a decade is 10 years.
Quick Answer. A decade is a period of 10 years. The word decade originates from the Greek word dekas, which means a group of 10. The word decade began to be used in English to mean a period of 10 years in 1590.