Extreme Heat Wave Grips Southwest: Houston & Phoenix Weather Update July 12, 2026

🔥🌵 Extreme Heat Wave Grips Southwest: Houston & Phoenix Weather Update | July 12, 2026 A dangerous summer heatwave continues across the Southwestern and Southern United States as Houston, Texas, and Phoenix, Arizona face another day of scorching temperatures on July 12, 2026. While Phoenix battles intense desert heat, Houston is dealing with a combination of high temperatures and oppressive Gulf Coast humidity, creating hazardous outdoor conditions. In this video, we break down the latest weather forecast, compare conditions in both cities, and explain what residents should expect as the heatwave continues. 📌 Key Highlights: • Extreme heat affecting Houston and Phoenix • Dangerous heat index values across Southeast Texas • Dry desert heat dominating central Arizona • Very warm overnight temperatures offering little relief • High UV levels and increased heat-related health risks 🌍 Regional Outlook: • Houston: Hot, humid conditions with dangerous heat index values and a slight chance of isolated afternoon storms • Phoenix: Scorching sunshine with extremely hot and dry conditions • South Texas: Widespread heat and humidity continue • Central Arizona: Triple-digit temperatures under clear skies • Southwestern U.S.: Persistent high-pressure system maintaining extreme heat ⚠️ What to Expect: • Dangerous afternoon temperatures during peak daylight hours • Elevated risk of dehydration and heat exhaustion • Warm nights with limited overnight cooling • Increased strain on power grids due to heavy air conditioning use 💧 Heat Safety Tips: • Drink water frequently and stay hydrated • Avoid strenuous outdoor activities during the hottest hours • Wear lightweight clothing, sunglasses, and sunscreen • Stay in air-conditioned or shaded locations whenever possible • Check on elderly relatives, children, pets, and vulnerable individuals regularly Stay informed with the latest Southwest U.S. weather updates and subscribe for daily forecasts covering the United States, Europe, and major weather events around the world. #HoustonWeather #PhoenixWeather #Heatwave #USWeather #WeatherForecast #ExtremeHeat #Summer2026 #WeatherUpdate #HeatAlert #SouthwestWeather