I went up to the Lake Champlain area where there was some high altitude cloud cover. Fortunately, it didn't affect the viewing basically at all. A cool side effect of the clouds/related atmospheric conditions though was that the sun had a 22° halo. I wish that 1) I'd had a camera that could capture it and that 2) I'd had the presence of mind to pay attention to what happened to it in the moments before and after totality.