September in Buffalo averages a daily high of 22.7°C with nights around 12.4°C. Expect roughly 10.3 wet days totalling 106.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Buffalo is June–September.
Based on FORT ERIE, ON CA (7.2km), 1995–2024. 18 years of September data.