Automatic sprinklers can be great for your lawn when they are properly adjusted, but can cause damage to your windows. Over time, the water that is spraying on your windows is drying and leaving hard water deposits on your window. As the months and years go by, this buildup will "fog" your windows or hardwater deposits will be very visible. The good news is it can be remedied. The deposits can be removed by specialized chemicals that are for this, also try adjusting your sprinkler head.
A lot of people don’t have their windows cleaned in the winter mostly because of the cold weather or they would rather have it done in the spring. But having them cleaned in the winter has it’s advantages, first most window cleaners are not that busy so you don’t have to wait a long time to get it scheduled. Also, they will stay cleaner longer because there is not as much dust and pollen in the air. But sometimes its just too cold to get them cleaned!