William J. Karins (born April 14, 1974) is an American meteorologist, working for NBC News and The Weather Channel. He reports weekdays for NBC's Early Today, MSNBC's First Look, Way Too Early, Morning Joe, MSNBC Live, CNBC and The Weather Channel. Prior to being named an NBC meteorologist, Karins was one of the original meteorologists for the now shuttered NBC Weather Plus. From 2009 to 2012, Karins had been the meteorologist on Weekend Today on Saturdays. Karins has also become one of the substitute hosts for Way Too Early since the departure of Willie Geist from the show for his Today hosting duties. He is also a fill-in for Al Roker on Today, and for Dylan Dreyer on Weekend Today.Karins was born in Albany, New York. He is a graduate of the State University of New York at Oneonta. Prior to working at NBC, he was a meteorologist at KSNT in Topeka, Kansas, and at WCTI in New Bern, North Carolina. He also worked in Bangor for WABI-TV.