Low pressure system surged north very mild air and brought December rain. Lots of melting snow, Warm Temperature report included.

Moderate rain which fell December 30th

Two storms systems effected Western Wisconsin, the first one being the strongest and had the most significant effects. During the day leading up to the storm it was mild out ahead of it My high on the 29th was 38.F, and the low that night barely even fell below freezing at 31.F, the temperatures quickly went back above freezing after sunrise and when the preip arrived in the storm it was rain. The center of the low pressure passed directly over the area, and as it spun around over the area surged the systems warm front northward and brought mild temperatures from the Southeast U.S temperatures continued to rise until the cold front it, even after dark temperatures rose into the lower to middle 40s, I was quite surprised in the systems strength when I saw temperatures as was as 43.F even more surprising at same time we were in the 40s, on the backside of the storm in NW Minnesota they were having blizzard conditions with temperatures near 0.F! Temperatures were warm enough to bring all rain to Western Wisconsin. The rain came in Waves of light to moderate rain, there was even some heavier downpours in some of the cells that formed. I got 0.31" of rain total. but some locations had more then .40, These rains fell on top of more then 2 feet of snow that sat over the area, fog and drizzle were common. Around 12AM Friday the systems cold front came back around and slammed into the mild air, The temperatures quickly dropped below freezing with an an hour and a half. In total I lost 8 inches of snow in the systems warmth and rain, going from 26" down to 18" spots that were wind whipped, or places where I shoveled became bare.
Showing how this area wind whipped by my house became bare of snow

The second low pressure track right on it's heels, Its effects were not as big as the first storm but it had some interesting things to it. As the storm started to pull in, Thunderstorms formed in Minnesota along the front of the storm some of these cells hit the far western portions of the area, but thunder was not the odd part, Temperatures were in the 20s at the time this happened! instead of rain with those storms, sleet and hail fell, hail as large as pea sized was reported across central Minnesota. In places that did not have thunder, freezing drizzle sleet and snow fell instead, I picked up a light covering of sleet and snow, but it did not nearly name up for the snow we lost.

List of reported high temperatures

The highest temperature was 44.F reported in Amery, Knapp and Hudson, the coolest 39.F from Spooner.