Most of them are pretty well sheltered. The only ones that aren't are obviously the tall ones. You're best chance would be on one of the tall rides at CA like TOT or the other launch tower (The Maliboomer I think?). The Sun wheel is an obvious choice as well. California Screaming might work but since most of the tall parts have "scream tubes" (or whatever they call them) around them it is at least more difficult to see. At Disneyland park it is more difficult. The monorail obviously shows the outside world but other than that I'm not sure if any of the others do. Splash mountain might, as well as the matterhorn or BTMR but your chances aren't nearly as good as rides at CA.