In September, Helong typically sees daytime highs of 18.8°C and overnight lows around 5.8°C. Compared to the annual average high of 8.6°C, September runs +10.2°C.
September in Helong averages a daytime high of 18.8°C and an overnight low of 5.8°C.
September runs +10.2°C compared to Helong's annual average high of 8.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.8°C and cooler evenings around 5.8°C.