New England Cold wave of 1857. January 1857 was the coldest month ever recorded in New England. Average month temperatures of 16.7 °F (−8.5 °C) in New Haven, 16.8 °F (−8.4 °C) in Boston, and 19.6 °F (−6.9 °C) in New York City remain coldest months on record in those cities. The worst of the cold descended on New England on January 22 with January 23 being one of the coldest days known in the region. In Bath, Maine a temperature reading of −52 °F (−47 °C) and in Franconia, New Hampshire −51 °F (−46 °C) were recorded. In Norwich, Vermont −44 °F (−42 °C) was recorded. Boston suburbs of Malden and West Newton recorded −30 °F (−34 °C) overnight. Boston temperatures for January 23 never rose above 0 °F (−18 °C) all day and Nantucket Island was connected to the mainland by ice. In New York City, Erasmus Hall in Brooklyn reached a high of 0 °F during the day and the Hudson River froze over solidly enough for people to walk across to Hoboken.[