In September, Huntsville typically sees daytime highs of 28.6°C and overnight lows around 15.9°C. Compared to the annual average high of 21.7°C, September runs +7.0°C.
September in Huntsville averages a daytime high of 28.6°C and an overnight low of 15.9°C.
September runs +7.0°C compared to Huntsville's annual average high of 21.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 28.6°C and cooler evenings around 15.9°C.