Dozens of cities still hold onto their all-time record low from this cold wave, including Atlanta (-9), Grand Rapids, Michigan (-24), and Wichita, Kansas (-22). Temperatures as frigid as -61 degrees (Montana), -59 degrees (Minnesota) and -50 degrees (Wisconsin) were recorded. The Mississippi River froze solid north of Cairo, Illinois, and ice not only clogged the river in New Orleans, but also flowed into the Gulf of Mexico a few days after the heart of the cold outbreak.