A punishing heat wave in the Southwest is set to spread east in the coming days, with temperatures over 90 degrees Fahrenheit expected in the Northeast and possible record highs in parts of New England later this week.

Summer will make a dramatic entrance in the U.S. this week with a heat dome that will bring stifling heat and uncomfortable humidity to millions

Several states are expecting extreme heat, with the heat index, or feels-like temperature, surging past 100 degrees.