The weather observed at NYC/LA GUARDIA, NY (KLGA) at 03:51 AM EDT was: The skies were partly cloudy. Temperature: 79F ( 26C) Dewpoint: 72F ( 22C) Relative Humidity: 79% Winds from the SW (240 degs) at 3 mph. Pressure: 1013.2 millibars. Altimeter:29.92 inches of mercury. The prevailing visibility was 10 miles.