Maine’s preliminary, seasonally adjusted unemployment rate increased to 3.9 percent in July, up from 3.7 percent in June and a recent low of 3.4 percent in March and April. The state’s July unemployment rate was down from 4.4 percent a year earlier, according to a release from the Maine Department of Labor, and the number of unemployed workers declined by 3,100 over the year to 26,600. Meanwhile, the U.S.