Excessive heat warnings remain in place in many areas across the U.S. and are expected to last at least through Monday. In Arizona’s largest metro area, Phoenix and surrounding communities flirted with a high of 115 degrees Fahrenheit (46 degrees Celsius) on Sunday. The National Weather Service in Phoenix is forecasting 116 degrees for Monday, just two degrees off the record high for that date set in 1907, before temperatures drop a few degrees for the next three days. In Nevada, the first excessive heat warning of the summer runs through Monday evening for the Las Vegas metro area. Daytime cooling centers are open across the region. Elsewhere, the heat and severe weather remained a concern throughout the southeast.
