As the cooler nights of early fall begin to intermingle with the warm nights of late summer, crappie patterns begin to shift. Indeed, a big part of fall-fishing success is recognizing how changing weather will affect crappie movements. In shallower lakes, fall crappie migrate into the shallows like clockwork. A number of theories have been postulated about why this happens, such as mass migrations of baitfish move into the shallows, the shallow water warms up in the afternoons and draws the crappie in, and weeds get knocked down by cold snaps, which makes it easier for the crappie to feed. Quite frankly, it doesn’t matter why the crappie leave their deeper water haunts. The fact that they do after the nights begin to cool down is all you need to know.