I had some of my best fishing for numbers (though not for size) last year on the weekend of the 8-9 of November. I left them biting both nights, figuring I'd end the season with a catch. The fish were shorts, but not micros--all in the 22" to 26" range.
Of course, I succumbed to the temptation of a 60 degree night the following Friday and got skunked.