Astro Bob's Backyard Astronomy: clear day, schmear day - we need clear NIGHTS!
It turns out that the worst enemies of star-gazers may be clouds - and clear skies. Clouds: well, that's obvious. But if that big ol' full moon is hanging over your shoulder, messing up your eyes' ability to adjust to the dark, it's not helping, either.
Don't stay up late; get out early.