In North America and Europe, September is synonymous with the "Back to School" season. It is a time of harvest, cooler evenings, and the arrival of harvest festivals. It is widely considered one of the most comfortable months for travel due to the mild weather.
By this system, , regardless of where the equinox falls. september is in what season
In short:
If you see a viral photo of September snow, it’s likely from Colorado or the Swiss Alps (northern hemisphere). If you see a photo of September cherry blossoms, it’s likely from Sydney or Santiago. In North America and Europe, September is synonymous