Sunshine is plenty in Seattle in the summer. And this summer, pretty much everyday has been sunny to the point where I'm looking forward to rain!
By the way, since you are from Detroit, these numbers might interest you:
Average annual rainfall Detroit - 30.03 (using Troy, MI
Average annual rainfall Seattle - 39.86.
Sure, that is more, but not shockingly more.
Cities like my former home, NYC, and Atlanta average more per year.
Anwyay, uhh, this about airplanes!!