What is the weight of an average rattlesnake?

There are numerous species of Rattlesnakes and most of them are of the average size and weight. They are usually around 3 to 4 feet tall with some large adults growing to be above the 4 feet length. The Eastern Diamond back is the largest of the Rattlesnake species and is around 7 feet in average length and weight around 12 to 15 kilograms. All other Rattlesnake species are much smaller and lighter than the eastern diamondback.