 Weather brought to you by Stewart Nissan in downtown Enid where they love vehicles almost as much as their customers. So when it's time to start looking, stop by Stewart Nissan and see the difference their people make. Top 100.9 KGWA weather. Today, sunny and hot with a high near 102. Heat index values as high as 108. Tonight, mostly clear with a low around 71. Tomorrow, mostly hot with a high near 97. And heat index values as high as 103.