 Weather forecast for northwest Arkansas and the rest of Kern country for this afternoon. Sunny a high near 96 with a heat index as high as 105. Northwest wind 5 to 10 mph becoming southwest in the afternoon. Tonight a 50% chance of showers and thunderstorms, mostly after 10 p.m. It'll be partly cloudy with a low around 73. And for tomorrow a 50% chance of showers and thunderstorms, otherwise partly sunny and a high near 85.