Cisco is the same way! He does NOT like the water/rain of any sort! It has been raining here too. Yesterday and today. I try to take him in between drops, but that is not always possible. When I think he has to absolutely go pee I just put him in the middle of the yard and tell him to hurry, hurry and go pee! If it is not raining too hard he will go with my persistance, but if it is coming down pretty good forget it! He will make a bee line for the door.LOL