The weather observed at NYC/LA GUARDIA, NY (KLGA) at 05:51 PM EDT was: The skies were mostly clear. Temperature: 84F ( 29C) Dewpoint: 66F ( 19C) Relative Humidity: 55% Winds from the S (180 degs) at 16 mph. Pressure: 1016.9 millibars. Altimeter:30.03 inches of mercury. The prevailing visibility was 10 miles.