In September, Bangor typically sees daytime highs of 15.6°C and overnight lows around 10.3°C. Compared to the annual average high of 11.9°C, September runs +3.7°C.
September in Bangor averages a daytime high of 15.6°C and an overnight low of 10.3°C.
September runs +3.7°C compared to Bangor's annual average high of 11.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 15.6°C and cooler evenings around 10.3°C.