In December, Helong typically sees daytime highs of -7.8°C and overnight lows around -18.9°C. Compared to the annual average high of 8.6°C, December runs -16.4°C.
December in Helong averages a daytime high of -7.8°C and an overnight low of -18.9°C.
December runs -16.4°C compared to Helong's annual average high of 8.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -7.8°C and cooler evenings around -18.9°C.