In September, Henderson typically sees daytime highs of 35.6°C and overnight lows around 20.1°C. Compared to the annual average high of 27.4°C, September runs +8.2°C.
September in Henderson averages a daytime high of 35.6°C and an overnight low of 20.1°C.
September runs +8.2°C compared to Henderson's annual average high of 27.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 35.6°C and cooler evenings around 20.1°C.