Temperature for January 2011
In January 2011 the average high temperature in Seattle, WA was 47.6°F, and this was 1.4°F warmer than the average of 46.2°F. The hottest day in January 2011 was 17 January when the temperature reached 55.0°F. Overnight the average temperature in January is 34.7°F and in 2011 the average overnight temperature was 1.9°F warmer at 36.5°F.