Kansas City had a record high for the date of 76 by late morning. By midnight the temp had dropped to 11 degrees.
Springfield, MO was at 80 degrees at 3:45 PM. Fifteen minutes late the temperature was at 40 degrees. By midnight they had a record low of 13 degrees.
Oklahoma City set a record high and low in the same day: 83 and 17 degrees, respectively.
As one might expect, there were nine tornadoes set off by the system as it moved through.
Given the lack of public communications in those days, just imagine the number of people who were trapped in situations with totally inadequate clothing for the severe temperatures.