Though it's a horrid time to be gardening right now, if you want to have bush beans this fall now is the time to plant them! In zone 7 and 8a you want to finish planting these by September 1st. In zones 8b and 9 you can plant through early September. Not sure what you're zone is? You can find it here.
I find my info about when to plant in the book Month to Month Gardening in Texas, which I highly recommend, especially if you are new to Texas! You can also find out when to plant vegetables and herbs HERE.