We've had a very warm winter so far. The climate average for the second half of January, the coldest time of year, is a high of 34 and a low of 14. In the next 10 days, all but one high will be above 34 (today was also an exception) and the lowest low is 17. And not just now; it's been this way pretty much all winter so far.
EDIT: NOAA disagrees with me on the low, telling me the lowest low, January 27, is 18.4°. There are still only two days out of the next ten with a low below 20. The high is in agreement.