The weather observed at SEATTLE/METRO, WA (KSEA) at 03:53 AM PDT was: The skies were cloudy. The weather reported was light rain and fog. Temperature: 48F ( 9C) Dewpoint: 48F ( 9C) Relative Humidity: 100% Winds from the SE (140 degs) at 9 mph. Pressure: 1013.6 millibars. Altimeter:29.91 inches of mercury. The prevailing visibility was 3 miles. The weather observed at SEATTLE/METRO, WA (KSEA) at 04:06 AM PDT was: The skies were cloudy. The weather reported was fog. Temperature: 48F ( 9C) Dewpoint: 48F ( 9C) Relative Humidity: 100% Winds from the SE (130 degs) at 12 mph. Altimeter:29.90 inches of mercury. The prevailing visibility was 3 miles. The weather observed at SEATTLE/METRO, WA (KSEA) at 04:35 AM PDT was: The skies were cloudy. The weather reported was fog. Temperature: 48F ( 9C) Dewpoint: 48F ( 9C) Relative Humidity: 100% Winds from the SE (150 degs) at 10 mph. Altimeter:29.89 inches of mercury. The prevailing visibility was 3 miles.