March in Niagara Falls averages a daily high of 5.8°C with nights around -3.9°C. Expect roughly 12.7 wet days totalling 56.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Niagara Falls is May–September.
Based on NIAGARA FALLS, NY US (7.8km), 1995–2024. 23 years of March data.