 WNIS Newstime 1206. The National Weather Service has an excessive heat warning in effect from today until 8 p.m. this evening. Mostly sunny skies expected throughout the day with a high near 97, heat index up to 111. A slight chance of showers and thunderstorms expected into this afternoon and spilling over into this evening. Otherwise, tonight mostly cloudy, low around 76. Mostly cloudy for tomorrow as well with a chance of showers and thunderstorms high near 91, heat index up to 105. Currently showing 90 on the south side, 88 on the peninsula, and 85 in the outer banks of North Carolina.