I just looked at the weather forecast and what I saw for Tuesday is only only suppose to be 7 degrees cooler than Monday. There is suppose to be a storm blow thru around dark Monday night but looking at the radar it looks weak as I type this. In my opinion I don't think it will be enough to make a difference.
Looking ahead into the latter part of the week its suppose to be 15 degrees colder Friday than it is Thursday so that is enough for me to call it a strong front. Friday night is getting down to mid/upper upper 30's...First let me clarify I don't know how crappie react to weather because I never crappie fish. As for bass it should have minimal effect on them and actually might help more than hurt...now with that being said I am talking mid October. If it were spring I would not have the same opinion.