In December, Mons typically sees daytime highs of 5.7°C and overnight lows around 0.8°C. Compared to the annual average high of 13.6°C, December runs -7.9°C.
December in Mons averages a daytime high of 5.7°C and an overnight low of 0.8°C.
December runs -7.9°C compared to Mons's annual average high of 13.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 5.7°C and cooler evenings around 0.8°C.