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 days at Anchorage begin to cool during August. By the end of the month, the temperature has dropped around 5 Â°F (3 Â°C) below what it was at the start. Usually every day in August warms to over 50 Â°F (10 Â°C) in Anchorage. The city averages 3 days this month when the thermometer reaches into the 70s Â°F (over 21 Â°C).