The weather observed at BOSTON, MA (KBOS) at 01:54 AM EDT was: The skies were mostly clear. Temperature: 72F ( 22C) Dewpoint: 54F ( 12C) Relative Humidity: 53% Winds from the NW (300 degs) at 9 mph. Pressure: 1018.5 millibars. Altimeter:30.08 inches of mercury. The prevailing visibility was 10 miles. The maximum temperature in the past 6 hours was 77F. The minimum temperature in the past 6 hours was 72F.