The best time to visit (in my humble opinion) is from mid May to mid September. I guess you can also visit the Falls at other times of the year but it can get very cold, rainy, snowing, windy.... see what I mean? :-)) So, it's better to stick to late-spring to early-autumn time.
I was told that late September to October can also be an excellent time to visit because of the beautiful fall foliage. Hey, seeing the trees around you change to an orangy color can be very spectacular indeed.


