temp

What's the water temp.

Upper 70s...

How will the lower water temp. affect the fishing ? Is this typical for this time of year ?

Avg water temp for Oct is 74, so it's a little bit above that (so far).
That should 'drag out' the fall season until the water temp falls below 70 sometime next month.
If the recent trends continue that may make fishing pretty much continue to suck :-(
But who knows ;-)