In September, Lancaster typically sees daytime highs of 31.5°C and overnight lows around 13.9°C. Compared to the annual average high of 23.9°C, September runs +7.7°C.
September in Lancaster averages a daytime high of 31.5°C and an overnight low of 13.9°C.
September runs +7.7°C compared to Lancaster's annual average high of 23.9°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 31.5°C and cooler evenings around 13.9°C.