Put away the jackets at least for the start of the work week, because New Jersey is getting a summer preview Monday when temperatures are predicted to soar to the mid 80s. “It’s the hottest day of the year in the Northeast and New Jersey, with temperatures into the mid-80s by mid-afternoon, ” said Dominic Ramunni, a National Weather Service meteorologist in the Upton, New York, office. “It’s a little taste and teaser of summer.” High temperatures could shatter records depending on the location, with a better shot at hitting new highs in Trenton than in Newark, meteorologists for the National W…