September in Winnipeg averages a daily high of 20.1°C with nights around 9.9°C. Expect roughly 8.6 wet days totalling 48.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Winnipeg is June–September.
Based on WINNIPEG THE FORKS, MB CA (1km), 1995–2024. 24 years of September data.