Barter Island
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and Climate
Barter Island, AK

  • The average high temperature in September: 35.4°F

The warmest month (with the highest average high temperature) is July (45.3°F).
The month with the lowest average high temperature is February (-13.9°F).

  • The average low temperature in September: 27.9°F

The month with the highest average low temperature is July (34.9°F).
The coldest month (with the lowest average low temperature) is February (-26.3°F).

  • The average rainfall in September: 0.7"

The wettest month (with the highest rainfall) is August (1.1").
Driest months (with the lowest rainfall) are February, March and April (0.2").

  • The average snowfall in September: 4.9"

The month with the highest snowfall is October (9.2").
The month with the lowest snowfall is July (0.5").