In September, Gannan typically sees daytime highs of 19.6°C and overnight lows around 6.7°C. Compared to the annual average high of 8.7°C, September runs +10.9°C.
September in Gannan averages a daytime high of 19.6°C and an overnight low of 6.7°C.
September runs +10.9°C compared to Gannan's annual average high of 8.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 19.6°C and cooler evenings around 6.7°C.