What is the best way to sow grass seed in an area that is bone dry from the drought?
Growing Grass in a Drought Affected Area
Certified GKH Gardening Expert
Here is an article that will help you.
I would also encourage you to contact your local County Extension Office.
They are a valuable source of information for these questions, and can help you with zone and regional specific recommendations.
Here is a link to help you locate your nearest office.