@Jérémie That is a scary forecast. My personal favourite is when I get a nice week of really sunny days, and nothing but clouds all night. It's like clockwork sometimes.
Here is a home made meme that I think we have all experienced once as well:
Clouds however will leave the sky just to give space to a full moon, and come back 7-10 dd after… Is Astrophotography the best empirical proof of Murphy's law ?
Bad weather is not all that bad… about 10 years ago the weather was so bad for me that I decided to start working on an image hosting website for astrophotographers during the cloudy nights… :-D