A Fox News meteorologist was pummeled by a group of teens when he tried to stop them from harassing another straphanger on a Manhattan subway early Sunday, cops and the prognosticator said. Weatherman Adam Klotz, 37, recounted the vicious attack in an Instagram video, appearing bruised and battered as he described how he was coming home on a train after watching the New York Giants NFL playoff game at a bar when he saw “this older gentleman was being hassled by this group of seven or eight teens.