Here's a look at this week's Valley forecast... 😖 The Extreme Heat Warning for the Valley has now been extended through 8 p.m. Friday. This alert also includes all of southern Arizona and the Grand Canyon below 4,000 feet. Any time heat alerts like this are in effect, those days are designated ABC15 Weather Action Days to remind you to take steps to protect yourself, your family, and your pets. #abc15 #weatheractionday #arizona #phoenix #forecast