Temperature for September 2011
In September 2011 the average high temperature in Barter Island, AK was 39.0°F, and this was 2.2°F warmer than the average of 36.8°F. The hottest day in September 2011 was 12 September when the temperature reached 51.1°F. Overnight the average temperature in September is 29.5°F and in 2011 the average overnight temperature was 4.9°F warmer at 34.4°F.