December weather forecast and climate
Wisconsin, USA

December begins the winter season in Wisconsin with dreary cold and lack of sunlight. The days are short, with the sun missing for days altogether from the skies.
The average high temperatures are in the 23°F (-5°C) to 34°F (1.1°C) range, while the average low temperatures are in the cold 6°F (-14.4°C) to 21°F (-6.1°C) range across the state. Temperatures below 0°F (-17.8°C) are highly regular as the cold sweeps, and the wind howls in the deserted lands. Northern highlands are the coldest with average low temperatures in Drummond at 7°F (-13.9°C) and Rest Lake at 6°F (-14.4°C).
Light rain occurs periodically in the eastern and southern regions, while the areas near Lake Superior receive a negligible amount. Snowfall is in the range of 10" (254mm) to 12" (305mm) in the state, while Bayfield, near the Lake Superior Shore, receives a massive amount to the tune of 27" (686mm).
December averages 12 sunshine days and that too at hardly 40% of the peak strength of the sun - certainly not the right weather to visit Wisconsin.