Well the 95% humidity and falling leaves/pollen did me in. Luckily I caught the dripping from the top of the passenger foot compartment early. No standing water, just damp around the edges of the floormat, with the floormat being damp as well.
Where exactly is the drain line that comes from the heater/AC box? Would like to try and fix it myself if I can, going to be on the road a couple of hours tomorrow and will need the AC. Thanks!