Temperature for September 2012
In September 2012 the average high temperature in Barter Island, AK was 43.3°F, and this was 6.5°F warmer than the average of 36.8°F. The hottest day in September 2012 was 18 September when the temperature reached 54.0°F. Overnight the average temperature in September is 29.5°F and in 2012 the average overnight temperature was 6.8°F warmer at 36.4°F.