In September, York typically sees daytime highs of 17.5°C and overnight lows around 9.3°C. Compared to the annual average high of 12.8°C, September runs +4.7°C.
September in York averages a daytime high of 17.5°C and an overnight low of 9.3°C.
September runs +4.7°C compared to York's annual average high of 12.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.5°C and cooler evenings around 9.3°C.