President James Monroe was the first president inaugurated outdoors. It started with an upset about seats between members of the Senate and the House of Representatives.
To calm the opposing factions, the ceremonies were moved outside. There was also another reason for the change of location: there was fear that the floor of the House of Representatives, where the ceremony was to be held, wasn't strong enough to hold all of the guests.
James Madison was the first president inaugurated in a suit of clothes made entirely in the United States of America. It was a woolen suit fashioned from cloth made from native American sheep.