In September, Hempstead typically sees daytime highs of 23.2°C and overnight lows around 15.3°C. Compared to the annual average high of 15.4°C, September runs +7.9°C.
September in Hempstead averages a daytime high of 23.2°C and an overnight low of 15.3°C.
September runs +7.9°C compared to Hempstead's annual average high of 15.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 23.2°C and cooler evenings around 15.3°C.