January 1950 was 18 degrees warmer than this year at Bloomington, Indiana. During January 1950, Bloomington had several days approaching 80 degrees.
The years 1950, 1951 and 1952 had very warm January weather across much of the US.
There has been no trend in January afternoon temperatures across the US over the past century.
There has also been no trend in the frequency of January nights below 20F.