Good morning. The US’s summer of weather misery is expected to escalate further this week as the south-west braces for record-breaking temperatures never seen before. Over the weekend, the National Weather Service issued a warning about forthcoming further excessive heat in an already scorching month, even by typical US desert standards. The warning covers the entire Phoenix metro area and beyond in Arizona, and it will remain in effect until at least Sunday. The warning came after a week of record global temperatures in what is predicted to be the hottest month in the US ever recorded, accelerated by the…