Extreme heat expected again at the Grand Canyon after 3 hikers die in heat-related incidents

GRAND CANYON NATIONAL PARK, Arizona — Visitors to Grand Canyon National Park are being warned about extreme temperatures that will hit the popular destination early next week after a recent increase in heat-related incidents in the inner canyon, including the deaths of three hikers. The National Weather Service issued an extreme heat watch at the Grand Canyon for midday Monday through Tuesday, forecasting temperatures that could reach or exceed 110 degrees Fahrenheit (43 degrees Celsius) a