September weather forecast
Alaska, USA

September marks the formal arrival of autumn in Alaska, and with it comes a noticeable shift in the state's climate and environment. Cities like Anchorage, nestled between mountain ranges and the sea, start to exhibit the classic fall colors and cooler temperatures associated with this season.

In comparison to August, September sees a more rapid decrease in daylight hours. The sun casts a more slanted, golden light, creating picturesque sunsets and elongating the shadows of the landscape. Temperatures, while still mild at the beginning, begin to drop steadily as the month progresses.

Rain remains a significant feature of September, particularly in the southeastern parts of the state. As the month advances, higher elevations and more northern locations might even witness their first snowflakes, signaling the coming winter. This mix of rain and potential snow makes September a month of diverse weather experiences across Alaska.

The rivers, which were abundant and flowing freely in the summer, begin to slow their pace. Their waters cool, and the life within them also prepares for the change in seasons. While fishing is still possible, it's not as bountiful as the peak summer months.

September is often celebrated for its tapestry of fall colors. The state's deciduous trees, especially those in the interior and southcentral regions, burst forth in vibrant hues of orange, red, and gold. This kaleidoscope of colors against the backdrop of evergreens creates breathtaking vistas, a favorite for photographers and nature enthusiasts alike. The average temperatures are in the mild to cold 41°F (5°C) to 48°F (8.9°C) zone, with snowfall to the tune of 4.4" (112mm) statewide.

Wildlife behaviors continue to evolve with the approaching winter. Bears, for instance, become hyperactive, foraging and feeding in preparation for their winter hibernation. Birds, particularly migratory species, start their southward journeys, filling the skies with their patterns.

September in Alaska is a month of beauty and transition. The warmth of summer fades, replaced by the crisp and colorful embrace of autumn, which in turn hints at the colder months ahead. It's a period of reflection, preparation, and appreciation for the state's ever-changing nature.

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• Anchorage - September »
  September is the month with the most rainfall in Anchorage, Alaska. The nights of September in Anchorage cool down to an average low of 43.9°F (6.6°C), subtly lower than daytime highs.
• Juneau - September »
  Recording a slight decline in temperature during the nights, Juneau's September temperatures average at a cold 39.7°F (4.3°C). On the last day of September, in Juneau, sunrise is at 7:00 am and sunset at 6:34 pm AKDT.
• Fairbanks - September »
  In Fairbanks in September, during 1.6 snowfall days, 0.79" (20mm) of snow is typically accumulated. In Fairbanks in September, during 13.1 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.
• Wasilla - September »
  In Wasilla in September, it is raining for 12 days, with typically 0.75" (19mm) of accumulated precipitation. In Wasilla, during September, the rain falls for 12 days and regularly aggregates up to 0.75" (19mm) of precipitation.
• Sitka - September »
  On the last day of September, in Sitka, sunrise is at 7:03 am and sunset at 6:39 pm AKDT. On the first day of September in Sitka, sunrise is at 6:03 am and sunset at 7:58 pm.
• Ketchikan - September »
  In Ketchikan, in September, it is raining for 19.3 days, with typically 6.85" (174mm) of accumulated precipitation. In Ketchikan, in September, it is raining for 19.3 days, with typically 6.85" (174mm) of accumulated precipitation.
• Kenai - September »
  In Kenai, during September, the rain falls for 16.6 days and regularly aggregates up to 2.72" (69mm) of precipitation. On the first day of September in Kenai, sunrise is at 6:59 am and sunset at 9:10 pm.
• Kodiak - September »
  The Kodiak, Alaska weather in September, presents an interplay of summer and autumn, with temperature and rainfall changes becoming more noticeable. In Kodiak, in September, during 17.6 rainfall days, 3.27" (83mm) of precipitation is typically accumulated.
• Bethel - September »
  In September, in Bethel, the rain falls for 15.5 days. Throughout the month of September, Bethel sees a steady low-temperature average of 41.5°F (5.3°C).
• Palmer - September »
  On the first day of September in Palmer sunrise is at 6:47 am and sunset at 9:05 pm. In Palmer, in September, during 20.6 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.
• Homer - September »
  In Homer in September, it is raining for 19.9 days, with typically 3.86" (98mm) of accumulated precipitation. September's onset in Homer, Alaska, introduces a mild reduction in the average high-temperature, from a moderate 56.7°F (13.7°C) in August to a cool 51.3°F (10.7°C).
• Unalaska - September »
  In Unalaska, Alaska, during September, the rain falls for 19.8 days and regularly aggregates up to 2.72" (69mm) of precipitation. Come September, the summer heat in Unalaska starts to ease off, reflected in the minor decrease in average temperatures, signalling the onset of fall.