I'm nowhere near as experienced in the blackpowder game as some on here. But if you can be reasonable sure it's dry, I don't think there's any reason to fire if planning to hunt the next day.
Some guys leave a load in all season. Some probably longer than that. If fired, you could run a brush and some patches with solvent. Probably be better than not cleaning at all, then give it a complete cleaning at home.
I'm sure you'll get better answers, but I survived a few seasons muzzle loading doing that.