The weather observed at NYC/LA GUARDIA, NY (KLGA) at 01:51 AM EST was: The skies were cloudy. Temperature: 36F ( 2C) Dewpoint: 21F ( -6C) Relative Humidity: 55% Winds from the E (090 degs) at 14 mph. Pressure: 1026.5 millibars. Altimeter:30.32 inches of mercury. The prevailing visibility was 10 miles.