DENVER -- In anticipation of whether or not the weather will cooperate for Barack Obama's open-air political concert at Invesco Field, The Wall Street Journal did a breakdown of weather patterns that have occurred on tomorrow’s date, Aug. 28. Four years ago on that date, the temperature dipped to 42 degrees. Winds as high as 53 miles per hour have also been clocked on that date. But a repeat of the biblical swarm of locusts that darkened the skies and destroyed the land in Aug. 28, 1875, would make for great television.