If you have a sprinkler system in your yard, you will need to ensure that it is shut down and protected before there is snow on the ground. This step is essential to the long-term viability of your sprinklers, as leaving them operational and filled with water when the temperatures drop will cause major damage and potentially cost you hundreds of dollars in repairs. This can all be prevented, however, if you know how to winterize your system successfully.
The first thing you will need to do is shut off the water supply to the sprinkler system itself. The main shutoff valve should be in an area where it is protected from freezing, whether that is in the garage or basement. To be extra cautious, you should have it wrapped in insulation or a thick plastic bag - anything to help keep it safe from the extremely low temperatures of winter. If there are any above ground pipes that are a part of the system, they should also be insulated properly.
After the water has been cut off, you should then turn off the timer. The controller will keep running automatically if the system is up to date, so you need to ensure that the system knows to stop running until after it is manually turned back on. You can reprogram it so it comes back on without interruption in the spring. If there is water that remains in the system after you take these steps, you should call in a professional to help drain it. Attempting to do it yourself could end up badly for the pipes.
If you need help winterizing your home's pipes, be sure to call in an plumber in Arlington, VA from John C. Flood.