weather in banff in september
Averages for Banff in September. September is the start of autumn in Banff, turning the whole town yellow and golden. The Aspen trees are the most beautiful to behold as they change their colours. This month can still expect on average 5 hours of sunshine per day. However it starts to cool down in Banff from September onwards. The average daytime temperatures are around 16Â°C (about 61Â°F), whereas the average minimum temperatures during the night tend to be around 3Â°C (about 37Â°C).