In December, Duluth typically sees daytime highs of -4.7°C and overnight lows around -14.3°C. Compared to the annual average high of 9.3°C, December runs -14.0°C.
December in Duluth averages a daytime high of -4.7°C and an overnight low of -14.3°C.
December runs -14.0°C compared to Duluth's annual average high of 9.3°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -4.7°C and cooler evenings around -14.3°C.