Its been my experience that largemouth bite better prefrontal and the smallies bite better during and postfrontal. The only thing snow has to do with the fish biting, is that it generally imdicates a frontal passage and like was mentioned, it usually falls under low light conditions. Ive had bright bluebird days where we wore the smallies out at dale, and somenasty weather days that we struggled, so you can take it all for what its worth. When the fish are ready to eat, theyll eat. All you can do is keep your bait in the higher percentage areas