In September, Anchorage typically sees daytime highs of 13.3°C and overnight lows around 4.9°C. Compared to the annual average high of 6.4°C, September runs +6.9°C.
September in Anchorage averages a daytime high of 13.3°C and an overnight low of 4.9°C.
September runs +6.9°C compared to Anchorage's annual average high of 6.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 13.3°C and cooler evenings around 4.9°C.