I guess I am warped and built my business on it over the last 15 years since I shoot in the rain all the time and my clients love it and makes some of the best images I have ever taken, but then again I enjoy having fun when shooting so the rain is not that big of a deal.
However since I am trying to be a solution to the problem and not part of the problem I will say this:
One: You should not have any problems, the "Hurricane" was so over played on the media (shocker) that Houston (350 miles away) your not even going to feel any effects of the hurricane besides your normal summer shower.
Two:
* Try the hotels in Houston - especially Hilton Americas by the Convention Center
* Rice Apartments on Main and Texas downtown BEAUTIFUL Inside
* Rice University though you need an appointment to shoot there.
* Downtown items has a lot of fun areas along with covered areas which are great to just walk around and be creative in and out of the rain

* Galveston Strain is AMAZING and would be my main suggestion for many reasons. One the buildings are very "New Orleans" feel to it so you can get great building with lots of cover, then there is the great food to take a break - from seafood to home made candy shops on the strain. If you want city life you have it with the trashy alley ways, railroad tracks, rusty building fronts, dark staircases, bright colored walls, the list goes on and on. Finally you have the beach, and while an ugly beach it is the beach and with the small Jetties all along the beach front and the higher waves due to Dolly you would get some GREAT wave crashing shots on the rocks/jetties.
Hope it helps and seriously people relax, the person with needing help asked for suggestions and not a bitch session!!! If you don't like the suggestion SO WHAT and besides I have lots of insurance if lighting hits me or my clients, its part of being a professional photographer and professional studio!
BWHAHAHAAHHA