From TravellingMom.com:
Most visitors to Niagara Falls arrive in the summer when the kids and grandkids get a break from school. Summer may be ending, but that doesn’t mean the fun disappears from Niagara Falls! On both sides of the Falls — the American side in Niagara Falls, New York and the Canadian side in Ontario — there’s plenty to keep you and the kiddos busy when you visit Niagara no matter what time of year you choose to go. Use this travel guide to help you plan your Niagara Falls adventures all year round.