Surface observations

Data from the National Weather Service, made available here by the UAlbany Department of Atmospheric and Environmental Sciences

The weather observed at NYC/LA GUARDIA, NY (KLGA) at 04:51 PM EDT was:
  The skies were mostly cloudy.
  The weather reported was a thunderstorm.
  Temperature: 88F ( 31C)  Dewpoint:  63F ( 17C)  Relative Humidity:  43%
  Winds from the S  (190 degs) at 15 mph.
  Pressure: 1012.6 millibars.  Altimeter:29.90 inches of mercury.
  The prevailing visibility was 10 miles.