Barometric Pressure has absolutely zero direct effect on bass. Zero. Even a large swing of a full point, say 29.50 to 30.50, on pressure readings means a fish has to make the tiniest of depth adjustments to offset the change.
Bass and other fish swim around all day at various depths, up and down, up and down, deep to shallow and back, to degrees that far, far exceed the tiny differences in atmospheric pressure pushing down on water. There is a column of air 60 or so miles in size to create 1 atmosphere of pressure at sea level. Water? 33 +/- feet to add a second atmosphere.
What it (atmospheric pressure) does do is reflect what weather patterns we see, what we are in. Here, we do know, emphatically, that fishing changes with clear skies versus cloudy/gloamy days, windy days versus dead air days, cold days versus warm days and more, that these do affect fish behavior.
I'll share the math of the actual distance a fish has to "adjust" in the water column to offset a particular quantity of added air pressure if anyone wants to see it.
Brad