In September, Sugar Land typically sees daytime highs of 31.8°C and overnight lows around 20.9°C. Compared to the annual average high of 26.3°C, September runs +5.5°C.
September in Sugar Land averages a daytime high of 31.8°C and an overnight low of 20.9°C.
September runs +5.5°C compared to Sugar Land's annual average high of 26.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.8°C and cooler evenings around 20.9°C.