To be cleaned or not be cleaned; that is the question. And, it really is one of the most asked questions relating to window cleaning and weather. I grew up in the Pacific Northwest where it rains a lot. We started our first window cleaning business there, and weather probably had less effect on business there than anywhere.
In fair weather climates when it rains people tend to freak out a bit about scheduling any service business that cleans for a number of reasons. Most of the hesitation is unwarranted.
Springtime brings wind, rain and even snow to many locations. If you have clean windows, plain old rain does not dirty them up so do not try to second guess the situation. Also, many window cleaning companies will offer a weather guarantee. No, they can not guarantee weather, but they can guarantee they will touch up any weather related messes, so find one that offers that.
If you have window coverings that you or a professional can clean at your residence, make sure you do it in a protected area away from wind.
I think windows won!

