6. Orlando, FL
The drier season in Orlando, that ranks 6th on our list of best places to live in the USA for sinus headaches, lasts for eight months, which means there are far less days when you will have to deal with humidity and the troubles it causes for your sinuses. As indicated on Weather Spark, the winters are short and cool with the average low temperature of 52º F. It does not have beaches like Baltimore or Sarasota, but it will take you only 1.5 hour ride to get to one.