Martinez Lake, about 145 miles west of Phoenix, reached 110F (43.3C) on Thursday amid scorching south-west heatSign up for the Breaking News US email to get newsletter alerts in your inboxA small community in the Arizona desert has broken a record for the highest March temperature ever recorded in t he US, as the south-west bakes in a blistering late-winter heatwave.The astonishing temperature was recorded just outside Martinez Lake, Arizona, which reached 110F (43.3C) on Thursday, according to the National Weather Service. Continue reading... ...read more read less