In September, Norwich typically sees daytime highs of 18.1°C and overnight lows around 10.2°C. Compared to the annual average high of 12.9°C, September runs +5.2°C.
September in Norwich averages a daytime high of 18.1°C and an overnight low of 10.2°C.
September runs +5.2°C compared to Norwich's annual average high of 12.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 10.2°C.