While it looks certain to go below 0 tonight in Madison, with no other below 0 temps on the horizon and time running out quickly for them to occur there is another record we could be trying to attain or tie, least number of below zero days in a year. Currently the record holder is 1877-78 with 1 but I am always skeptical of temperature records back then since measurements were only taken 3 times a day. A more modern record is 1997-98 with 2 days. Unfortunately it looks like it will go below 0 before midnight, which means we will get hit with 2 days below 0, even though it's occurring for only 1 night.