MIKE MOSS SAYS: John, The five high temperatures are for the daytime periods represented by the labels (MON, TUE, etc) and the forecast icons on the graphic. The low temperatures are for the mornings in between the listed days, beginning with the first day of the forecast. The intent of the arrangement is that the temperatures are shown in temporal order from left to right. So, for a 5-day forecast that starts with Monday, for example, the order would be:
Mon PM High Tue PM High Wed PM High Thu PM High Fri PM High
Other WRAL Top Stories
Mon AM Low Tue AM Low Wed AM Low Thu AM Low Fri AM Low Sat AM Low
Hope that helps!