The National Weather Service forecasts extreme heat through the weekend for Maricopa and Pinal counties. Temperatures could peak at 117 degrees daily through Sunday, Aug. 9, NWS officials said Wednesday. #AZNEWSMEDIA yourvalley.net/stories/dangerous-heat-expected-through-weekend-in-maricopa-pinal-counties-nws,709109 📸: The Associated Press/Ross D. Franklin/File