In December, Green Bay typically sees daytime highs of -1.5°C and overnight lows around -10.0°C. Compared to the annual average high of 12.4°C, December runs -13.9°C.
December in Green Bay averages a daytime high of -1.5°C and an overnight low of -10.0°C.
December runs -13.9°C compared to Green Bay's annual average high of 12.4°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -1.5°C and cooler evenings around -10.0°C.