 News Talk 790, WNIS News Time 205. Here's your National Weather Service forecast. A heat advisory remains in effect from 11 a.m. to 8 p.m. Saturday. For the overnight, partly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s, south winds at 10 to 15. Saturday, partly sunny, a chance of showers and thunderstorms in the afternoon. Highs in the mid-90s, heat index up to 110. It's 81 in Norfolk, 81 on the Peninsula, 80 in the Outer Banks.