June in Welland averages a daily high of 24.3°C with nights around 13.3°C. Expect roughly 10.6 wet days totalling 77.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Welland is May–September.
Based on WELLAND PELHAM, ON CA (7.1km), 1995–2024. 18 years of June data.