Colder temperatures and your system.
My system hasn't been blown out yet. Do I need to worry about the colder temperatures?
If you haven't had your sprinkler system blown out yet, and you are concerned about our chilly forecast, simply cover the pipes that are coming out of your house with a towel or a blanket to prevent them from freezing. Because the ground has not frozen yet, the only part of your system that is vulnerable are those pipes that are exposed to the air.