00z isn't out yet, but the 12z EPS had six consecutive days with a high below 20 at BDL between 1/25 and 1/30. Probably won't happen, but if it did, we'd be in rarified air.
The last comparable cold snap with such highs was 12/28/17 - 1/1/18 at five days. The record is 9 days in 1961, followed by 6 days in 1979 and 5 in the period I mentioned. We've had four consecutive days six times, with most recent prior to 2017 blowing through it being 1989.