 News Talk 790 WNIS News Time 1105. Here's your National Weather Service forecast. For the overnight, mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Southwest winds at 5 to 10. Sunday, mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Southwest winds at 5 mph. Heat index up to 102.