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

September weather forecast and Climate
Barrow, AK

  • The average high temperature in September: 35.8°F

The warmest month (with the highest average high temperature) is July (46.9°F).
The month with the lowest average high temperature is February (-8°F).

  • The average low temperature in September: 28.5°F

The month with the highest average low temperature is July (34.8°F).
The coldest month (with the lowest average low temperature) is February (-20.4°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 January, February, March and December (0.1").

  • The average rainfall days in September: 12 days

The month with the highest number of rainy days is October (13 days).
Months with the lowest number of rainy days are January, February, March and April (5 days).

  • The average snowfall in September: 4.6"

The month with the highest snowfall is October (8.8").
The month with the lowest snowfall is July (0.2").

  • The average sea temperature in September: 36°F

Best months for swimming (with the highest average sea temperature) are August and September (36°F).
Coldest months (with the lowest average sea temperature) are January, February, March, April, May, June and December (28°F).

  • The average daylight in September: 13h

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

  • The average sunshine in September: 4h

Months with most sunshine are May, June and July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 0).

  • The average UV index in September: 1

Months with the highest UV index are June and July (UV index 3).
Months with the lowest UV index are January, February, October, November and December (UV index 0).