The weather observed at NYC/LA GUARDIA, NY (KLGA) at 03:51 PM EDT was: The skies were mostly cloudy. Temperature: 87F ( 31C) Dewpoint: 60F ( 16C) Relative Humidity: 40% Winds from the S (170 degs) at 14 mph. Pressure: 1016.0 millibars. Altimeter:30.00 inches of mercury. The prevailing visibility was 10 miles.