It was supposed to be sunny and beautiful that day. Even the weather announcer on the radio seemed a little surprised that the clouds weren't cooperating by going away. I was relieved though.
Clouds mean the lighting is even (sometimes a little too even to be a little flat). They mean there's no need to squint. They mean slightly cooler temps. They mean the photos can be taken in any direction. So even though the lighting is not as creative as when the sun is shining, it makes the session a little more pleasant.
It turned out pretty well and everyone seems happy with the results.