In December, Luzern typically sees daytime highs of 3.9°C and overnight lows around -1.5°C. Compared to the annual average high of 12.7°C, December runs -8.9°C.
December in Luzern averages a daytime high of 3.9°C and an overnight low of -1.5°C.
December runs -8.9°C compared to Luzern's annual average high of 12.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 3.9°C and cooler evenings around -1.5°C.