 News from the Radio Oklahoma News Network, I'm Ann Roberts. Temperatures are expected to register near 100, but the heat index is expected to soar nearing 110, shares Rick Smith of the National Weather Service. It could be between 105 and 110 degrees in some locations, and at that level, it doesn't take much at all if you're outside for too long to cause some problems. Smith does say models are showing potential relief near the end of the week with a summertime cold front.