July in Niagara Falls averages a daily high of 27.6°C with nights around 16.6°C. Expect roughly 11 wet days totalling 93.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Niagara Falls is May–September.
Based on NIAGARA FALLS, NY US (7.8km), 1995–2024. 24 years of July data.