I'm in Canda,46 degrees.
Grew Nirvans Nothern lights,Aurora Indica, and Ice.
They finished around first week of October.
White Widow/Big bud from femaleseeds also finishes fairly early.
Dr greenthumb has some early finishers like "the Dope" and Endless Sky.
BC Bud Depot also has some good early flowering indicas like Texeda Timewarp,God Bud,Sweet God