Today the temperature in Louisville has been the coldest in roughly 20 years. I honestly can't remember the last time the temperature got below zero degrees. The "Arctic Vortex" has caused severe weather in many areas of the country and has closed schools and businesses. As could as it is going to get, it is very unlikely it will get as cold as the winters of 1976-77 and 1977-78, when the Ohio River froze for several days.
In areas stretching from Louisville to Cincinnati, the temperature got as cold as twenty degrees below zero. Subzero temperatures were prevalent for much of the winter. The river was so frozen that people were actually able to walk across the river. A recent Courier-Journal article mentions these record temperature and an article from last year shows several photos from the time.
So while many people are complaining about the cold, remember; it could me much worse.