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

September weather forecast and climate
Barter Island, AK

September, the first month of the autumn, in Barter Island, is also a wintry month, with average temperature varying between 35.4°F (1.9°C) and 27.9°F (-2.3°C).

Temperature

In September, the average high-temperature marginally drops, from a frosty 43.9°F (6.6°C) in August, to a cold 35.4°F (1.9°C). In Barter Island, in September, the average low-temperature is 27.9°F (-2.3°C).

Rainfall

In Barter Island, 0.7" (17.3mm) of precipitation is typically accumulated. During the entire year, Barter Island aggregates up to 6.2" (157.5mm) of precipitation.

Snowfall

Months with snowfall in Barter Island, Alaska, are January through December. During September, Barter Island regularly aggregates up to 4.9" (124mm) of snow. In Barter Island, during the entire year, snow aggregates up to 41.8" (1062mm).

Daylight

The average length of the day in September in Barter Island is 13.3h.

What is the temperature in September in Barter Island?

In September, in Barter Island, Alaska, the average high-temperature is 35.4°F (1.9°C), and the average low-temperature is 27.9°F (-2.3°C).

How much does it rain in Barter Island in September?

In Barter Island, Alaska, in September, 0.7" (17.3mm) of precipitation is typically accumulated.

How much does it snow in Barter Island in September?

Throughout September, in Barter Island, 4.9" (124mm) of snow is accumulated.

What is the average length of the day in September in Barter Island?

In Barter Island, Alaska, the average length of the day in September is 13.3h.
Average temperature in September - Barter Island, AK
  • 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).

  • 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).

Average rainfall in September - Barter Island, AK
  • 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").

Average snowfall in September - Barter Island, AK
  • 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").

Average daylight in September - Barter Island, AK
  • Average daylight in September: 13.3h

The month with the longest days is June (Average daylight: 24h).
The month with shortest days is December (Average daylight: 0h).