Well lets take a look. The NWS and NOAA have a really good Climate site called the National Climate Data Center. This includes portals into various types of historical data. Lets first look at this January. Here are two tables that show rank by geography of both temperature and precipitation.
The graph compares other monthly averages and assigns a rank to them. We can see that January was the 19th driest on record. The next image is an average location and flow of 500 millibar pressure gradients, which is roughly where the jet stream exists for the month.
This is the time of the now infamous Polar Vortex that caused huge impacts on the East Coast. The Jet stream dipped south and brought cold polar air and feet of snow into the southern US for several weeks. In turn we were stuck with a ridge of high pressure up and down the west coast that brought mild temperatures and drought conditions.