Mercury hits 100 05/30/2003 From Web Staff Reports The official temperature at Dallas/Fort Worth International Airport soared to 100 degrees Friday. "Whenever you get southwest winds in here, you know the temperature will probably go above normal," said WFAA-TV (Channel 8) meteorologist Steve McCauley, who forecast an afternoon high of 100 degrees, the first triple-digit reading of the season. As of 3 p.m., the D/FW temperature was holding at 99, but 100 degree readings were reported at Addison Airport and the Naval Air Station Joint Reserve Base in Fort Worth. Those southwest winds, gusting up to 23 mph, were having...