In September, Saint George typically sees daytime highs of 31.6°C and overnight lows around 14.3°C. Compared to the annual average high of 23.7°C, September runs +7.9°C.
September in Saint George averages a daytime high of 31.6°C and an overnight low of 14.3°C.
September runs +7.9°C compared to Saint George's annual average high of 23.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.6°C and cooler evenings around 14.3°C.