In December, Arnsberg typically sees daytime highs of 3.5°C and overnight lows around -1.1°C. Compared to the annual average high of 11.9°C, December runs -8.4°C.
December in Arnsberg averages a daytime high of 3.5°C and an overnight low of -1.1°C.
December runs -8.4°C compared to Arnsberg's annual average high of 11.9°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 3.5°C and cooler evenings around -1.1°C.