depends on where server is located. Farther = higher ping. Also, other internet use in your home can increase it. For example, if someone is streaming a movie, your ping will skyrocket. My parents use the Apple TV every night around 9pm, and my Ping skyrockets. Now I know not to play CS:GO after 9pm, lol.
Im not 100% positive, but maybe the internet package you have can affect it. not sure on that though.