Phoenix will become the first major city in American history to average over 100°F for an entire month. The city has experienced a virtually continuous heatwave since the beginning of July, with an average high of 114.1°F and an average low of 90.2°F. While Phoenix is used to severe summer heat, this July has been unprecedented in city history with a record three weeks straight of 110°F+ heat and 11 straight days of overnight lows at or above 90°F. The record streak of hot nights is particularly concerning because repeatedly hot nighttime temperatures do not allow the body to recover from hot days, increasing the risk of heat illnesses and even death. Unfortunately for Phoenix, this ongoing heatwave looks to continue for the rest of the month, with daytime highs expected to continue to soar above 110°F, with nights only dipping into the 90s.