The weather observed at NYC/LA GUARDIA, NY (KLGA) at 03:51 AM EST was: The skies were cloudy. The weather reported was moderate rain and fog. Temperature: 42F ( 6C) Dewpoint: 40F ( 4C) Relative Humidity: 92% Winds from the NE (050 degs) at 17 mph. Pressure: 992.7 millibars. Altimeter:29.32 inches of mercury. The prevailing visibility was 4 miles. There has been 0.06 inches of precipitation in the past hour. There has been 0.30 inches of precipitation in the past 6 hours.