Rainy days lift my mood. I realize that's the opposite of how it often works, but I love the peace and coolness of rain. This might be because I've lived most of my life in high mountain deserts, so rain is an occasional repreive from the hard hot blue skies of summer.
But I also loved rain during the two years I spent in the Philippines, when the hot downpours just made it somehow even more humid.
And I loved rain when I lived in Alaska, where the rain soaked you to the skin and was dangerous if you didn't know how to manage your body temperature. (Repeat after me: “Cotton is cold. Cotton kills...”)
So let it rain, I guess? I don't really have a huge conclusion to this one.