In December, Bismarck typically sees daytime highs of -3.4°C and overnight lows around -14.6°C. Compared to the annual average high of 11.9°C, December runs -15.3°C.
December in Bismarck averages a daytime high of -3.4°C and an overnight low of -14.6°C.
December runs -15.3°C compared to Bismarck's annual average high of 11.9°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -3.4°C and cooler evenings around -14.6°C.