AccuWeather forecasters are also on board with the fiery fall forecast: “Fall is going to feel more like an extended summer for millions of Americans this year,” said AccuWeather lead long-range expert Paul Pastelok. “Much of the country will experience a delayed transition to cooler temperatures this year, following a summer with intense heat."

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence this year happens on Sunday.