Note:  Do not rely on this information. It is very old.

Autumn

Autumn (Lat. autumnus, perhaps from augeo, I increase, more probably from avere, to be well), the third season of the year, usually taken to include, in Great Britain, August, September, and October; in France and North America, September, October, and part, or whole, of November. Astronomically, however, it begins (in the N. hemisphere) at the autumnal equinox and ends at the winter solstice (22 Sept. to 21 Dec). In S. hemisphere it corresponds in time to the spring in the northern.