After four Grand Canyon hikers died this month, Phoenix firefighters are warning Valley hikers to stay off trails as temperatures near 115 degrees. Four people have died while hiking Grand Canyon trails this month as extreme heat grips Arizona. First responders say the same danger could hit Phoenix-area trails this week, with temperatures expected to climb close to 115 degrees. Experienced hikers warn the canyon can be deceptive, especially for tourists who may not realize how much hotter it gets below the rim. Phoenix Fire is urging people to avoid hiking in extreme heat, listen to their bodies and turn around before a rescue is needed.
