In December, Trondheim typically sees daytime highs of 0.2°C and overnight lows around -6.5°C. Compared to the annual average high of 8.4°C, December runs -8.2°C.
December in Trondheim averages a daytime high of 0.2°C and an overnight low of -6.5°C.
December runs -8.2°C compared to Trondheim's annual average high of 8.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 0.2°C and cooler evenings around -6.5°C.