In December, Appleton typically sees daytime highs of -1.4°C and overnight lows around -9.9°C. Compared to the annual average high of 12.5°C, December runs -13.9°C.
December in Appleton averages a daytime high of -1.4°C and an overnight low of -9.9°C.
December runs -13.9°C compared to Appleton's annual average high of 12.5°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -1.4°C and cooler evenings around -9.9°C.