See long range weather forecasts for the next 60 days for the Deep South Region. The Old Farmer's Almanac's scientifically-based, long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.
Weather in Alaska in September. The average maximum daytime temperature in Alaska in September is a cool 13Â°C (55Â°F). There are usually 5 hours of bright sunshine each day, which represents 41% of the 13 hours of daylight. The average sea temperature in and around Alaska in September is 12Â°C (54Â°F).
The Southwest region of Alaska includes much of the coastline. This region averages summer temperatures from the high 40s to the low 60s and averages winter temperatures from zero to a high of 20 degrees Fahrenheit.During the summer months, the Southwest city of Bristol Bay Boroughs experiences fog as a common occurrence.his region averages summer temperatures from the high 40s to the low 60s and averages winter temperatures from zero to a high of 20 degrees Fahrenheit. During the summer months, the Southwest city of Bristol Bay Boroughs experiences fog as a common occurrence.