Heatwave Breaks Records in Portland and Dallas, Cooler Temperatures Expected

After four days of record-breaking heat, Portland will experience a slight cooling trend on Thursday, with temperatures expected to reach around 93 degrees. Onshore flow and increased cloud cover will contribute to the cooling, while deeper moisture from the southeast may make the area feel muggy. Showers and thunderstorms are also expected along the Cascades, potentially aiding firefighting efforts but also posing a wildfire risk. The coast will offer a significant break from the heat, with temperatures struggling to reach the mid-60s. The weekend will bring further relief, with temperatures remaining near seasonal averages and a slight possibility of residual rain from tropical storm Hilary.