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).
Climate of Anchorage, Alaska. First winter snowfall on the Chugach Mountains in September 2005. Anchorage, Alaska has a subarctic climate with the code Dfc according to the KÃ¶ppen climate classification due to its short, cool summers. Average daytime summer temperatures range from approximately 55 to 78 Â°F (12.8 to 25.6 Â°C); average daytime winter temperatures are about 5 to 30 Â°F (â15.0 to â1.1 Â°C).