Averages from 2021–2025 (150 days of record).
Expect September days in Anchorage, Alaska to top out around 54°F and cool to about 43°F overnight, with roughly 19 days of measurable rain across the month. In recent years September has ranged from 26°F to 65°F.
JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember
Current Anchorage, Alaska forecast → · Historical data by Open-Meteo (ERA5).