Three days from now, January 20, will be a busy day: Donald Trump's inauguration  has been moved indoors , the Capitol rotunda, with viewers being sent to the Capital One Arena.  The last time this happened was in 1985 for Ronald Reagan, when the temperature reached 7F.  Not so bad this year at up to 19F, but the prominent factor was wind chill.  It is very uncomfortable in DC at this time of year. It was on  13January1982  when I was working for the U.S. Senate. This was a particularly cold period for the city, with temperatures dropping to below zero.  Chicago that day was -25F.  Citrus groves in Florida froze. It began snowing, all told, around 6 inches in a few hours.  A fire in the Metro train line made for a particularly traffic nightmare. When the snowfall seemed to be ending, the first plane to take off at National Airport ( later named Reagan International--he first got elected in 1981 ) when visibility was only a sixteenth of a mile...