Record-shattering March scorcher: 70 million to bake in summerlike #HeatDome into weekend Record-challenging heat will surge across the Southwest this week as a stubborn heat dome sends temperatures into the 90s and even past 100 degrees in some cities, levels more typical of late spring or early summer. By Alex Sosnowski, AccuWeather senior meteorologist Published Mar 16, 2026 2:39 PM EDT | Updated Mar 16, 2026 3:55 PM EDT " Much of the Southwest will jump from springlike conditions to summerlike heat this week, with temperatures climbing well into the 90s in many areas and even topping 100 degrees in some locations which are more typical of early summer. The heat dome will have staying power and may not begin to weaken until this weekend to early next week. A burst of summerlike heat will build across the Southwest this week, pushing temperatures in many areas into the 90s and some past 100 degrees. Monthly records may be challenged, and the heat could hold into the weekend or early next week" Read more: https://www.accuweather.com/en/weather-forecasts/record-s… #USWx #SouthwestWx #ClimateChange #RecordHeat #MarchHeatWave #HeatWave #LosAngeles #LasVegas #PhoenixAZ #PalmSpringsCA #ClimateChangeIsReal