That makes a difference!
I have no clue about any pools in that area. Sorry! But, if you are in Raleigh, Pullen Park is my personal fave. Its just a few dollars, its all indoors, kids love it. Plus, there is a park next door with a train, merry go round, bumper boats, paddle boats and lots of places to picnic. Its really very pretty!
I do recall the YMCA in Durham (there's a couple) that has indoor pools. Check their website, I'm sure they have pics.