The average temperature in Bar Harbor, ME the average temperature is 30.62 degrees in summer, with precipitation around 6.0 mm , Nice's temperatures reach 31.82 during the hot season, with 6.0 average of rain rate . In winter, however, weather indicators show around -1.35 degrees in Nice, compared to the -17.86 average degrees reported in Bar Harbor, ME. During the winter period, Bar Harbor, ME can register 2.3 mm precipitation, while Nice have an average of 12.0 mm rain level.