Your IntelliStar may have just been updating some information, and not all of the screens were updated. Most IntelliStar's usually update info at 10:10 AM, 6:20 PM, and 9:10 PM EST, (9:10AM, 5:20PM, and 8:10PM CST), or even more often during a severe weather event where constant updates may be veered necessary. My forecast temperature for tonight on my IntelliStar at that same time read: 6:19 EST (5:19 CST), 14 degrees. 10 minutes later, it forecasted 1 degree for tonight. Occasionally I have seen that same error/bug on my IntelliStar and usually doesn't last for more than one local forecast or an LDL segment.
Though, you may want to hear it from professionals like the TWC Star Team as they may know it better than I do.