In September, Newcastle under Lyme typically sees daytime highs of 16.1°C and overnight lows around 8.8°C. Compared to the annual average high of 11.7°C, September runs +4.4°C.
September in Newcastle under Lyme averages a daytime high of 16.1°C and an overnight low of 8.8°C.
September runs +4.4°C compared to Newcastle under Lyme's annual average high of 11.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 16.1°C and cooler evenings around 8.8°C.