The weather observed at NYC/LA GUARDIA, NY (KLGA) at 04:51 PM EST was: The skies were mostly cloudy. Temperature: 70F ( 21C) Dewpoint: 63F ( 17C) Relative Humidity: 78% Winds from the S (190 degs) at 5 mph. Pressure: 1023.0 millibars. Altimeter:30.21 inches of mercury. The prevailing visibility was 7 miles.