The weather observed at LAS VEGAS, NV (KLAS) at 09:56 AM PST was: The skies were mostly clear. Temperature: 51F ( 11C) Dewpoint: 23F ( -5C) Relative Humidity: 33% Winds from the W (270 degs) at 7 mph. Pressure: 1015.0 millibars. Altimeter:29.98 inches of mercury. The prevailing visibility was 10 miles. The maximum temperature in the past 6 hours was 51F. The minimum temperature in the past 6 hours was 39F.