Where are the warmest places in the USA to vacation in January?
The warmest location in the USA in January is Honolulu, where the average high in January is a balmy 80 degrees, and the low 65. Other locations in Hawaii have similar January temperatures. If you can t make it to the Aloha State, try South Florida. Miami s January average high temperature is 77, and the average low about 60; in temperate Key West, the averages are 75 and 65. Other rather warm spots in the continental USA include Phoenix (with an average January high of about 67 degrees) and Brownsville, Texas (with an average high of about 69 degrees). This map (pdf) from the National Climatic Data Center shows the average daily high temperatures for January across the USA. (Answered by Doyle Rice, USA TODAY’s weather editor, Dec.