If you spent much of last month shivering in the United States, you were not alone. A preliminary look at temperature data shows that the U.S. is likely to have experienced its coldest January average mean temperature since at least 2011, with records going back to 1895. Climate Central's preliminary report for January showed that 166 out of 191 analyzed cities (87 percent) were cooler than normal. That included Alaska, where the warmest city, Fairbanks, was an astounding 14.6 degrees Fahrenheit above normal. They put the January departure from the historical average number for the nation at minus 2.9 F....