The weather observed at JOHNSTOWN, PA (KJST) at 08:54 PM EDT was: The skies were clear. Temperature: 52F ( 11C) Dewpoint: 34F ( 1C) Relative Humidity: 50% Winds from the SE (140 degs) at 10 mph. Pressure: 1026.4 millibars. Altimeter:30.29 inches of mercury. The prevailing visibility was 10 miles.