In September, Mianyang typically sees daytime highs of 25.5°C and overnight lows around 18.3°C. Compared to the annual average high of 21.2°C, September runs +4.4°C.
September in Mianyang averages a daytime high of 25.5°C and an overnight low of 18.3°C.
September runs +4.4°C compared to Mianyang's annual average high of 21.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 18.3°C.