Ok, Fall Coming-What Water Temps Turn Fishing On ?

Am new at this and I know and have experienced warmer water, slower fishing (well, for me anyhow).
So, what do the water temps have to cool to, to turn 'on' fall black bass fishing?

I have seen some lakes that fish tougher in the Fall. But some get really good. I personally think it gets best when the water is in the 70s.

I'll be glad when it cools off.

78 seems to be the magic number! However all lakes can vary up or down!

Lot's of 'views', so I'm not alone in this preponderance....

I had a guide on T bend tell me 70s in the day and 50s at night. That was 30 years ago and I still think it a good hint