I get water all over my blades. But my tap water comes out at 150 degrees, so, I after I wipe the blade down, I run the water on it until the blade is toasty, and then give it a quick dry on the towels. The heat from the blade drives off the rest of the moisture. Of course, to be sure, I also leave them out in the open possition to dry overnight. (My 7 day rotation consists of 8 blades. One in every slot, and one out drying)
If I dont want to leave an open blade (vising kids of some such) I simply reach for the hair dryer. Low heat, high speed, blow blow blow!