I canvass a lot at this time of year. The custies I pick up are good, because they know you work through winter. I rarely get people cancelling for winter, because when I canvass, I tell them that we're all year round. I don't take back people who cancel, so it sorts itself.
Winter is also the time of year when the windows get dirtiest, so why would anyone want to cancel for that period??
You sometimes get the odd dozy custy saying that rain makes windows dirty etc. If that's true, would they like you to call back after rain and clean them again, as long as they pay of course? No, because they aren't dirty.
The issue isn't winter or rain, it's people who never really give a thought to the logic of it all. Why should they, it's only window cleaning?
That's how things are mate, so clean all year, and just take the hits from ignorant custies who don't understand.
Welcome to the world of window
licking cleaning.
HTH