I found a golden rule to be untrue last night. The golden rule that I'm talking about is:-
'Seeing is bad after rain or a storm'
We had thunder and lightning storms yesterday evening, in fact a house just down the road from where I live was struck by lightning, and caught the roof alight.
I went out last night about 3 am to do some Moon imaging. There was a fair amount of cloud about, but in between some clear patches. To my amazement the 'seeing' was very good.
Just goes to show.