Temperature for September 1989
In September 1989 the average high temperature in Barter Island, AK was 41.0°F, and this was 4.2°F warmer than the average of 36.8°F. The hottest day in September 1989 was 6 September when the temperature reached 46.0°F. Overnight the average temperature in September is 29.5°F and in 1989 the average overnight temperature was 3.7°F warmer at 33.3°F.