1. San Jose, CA
The ocean influence prevents temperature extremes making the climate of San Jose pleasant for everyone, not just sinus sufferers. As Weather Spark indicates, winters in San Jose are short, cold and wet, with the average low temperature of 42ºF. The warm season lasts for almost 4.5 months, during which the temperature does not exceed 82ºF. There are no significant variations in humidity throughout the year, making for a pleasant atmosphere. San Jose ranked 1st in the report published by the Asthma and Allergy Foundation of America for 2016 as the best city to live in for allergy sufferers. A place that makes it unlikely for you to suffer allergy and sinus inflammation earning a top spot on our list of the best places to live in the USA for sinus headaches.