Can you see the falls in the rain?

Yes, you can absolutely see the falls in the rain, and honestly, it's often better than a sunny day. The mist from the falls is already like a constant drizzle, so rain just blends in. The real issue is fog—if it's a cold rain, the mist can turn into thick fog that blocks the view from the American side. But if it's just a warm summer rain, you'll get way fewer crowds and some epic rainbow action. Just bring a rain jacket, not an umbrella—the wind off the falls will destroy that thing in seconds.

If you're doing the Maid of the Mist boat tour (which you should), you're gonna get soaked anyway—rain or shine. The boats run in light rain, but they'll shut down if there's lightning or high winds. For the best rain experience, hit the Canadian side's Queen Victoria Park or the Table Rock viewing area—you'll be close enough that the rain doesn't matter. And skip the Journey Behind the Falls if it's pouring; you'll just be wet and paying $24 for a wetter tunnel. Bottom line: rain is fine, just check the forecast for wind and lightning, and wear waterproof shoes.