85 was epic cold. That and 1994 are my record low of -6. Inauguration Day was 11F at the time for it, I think DCA was 14 for a high, I was 9F
1994 just incredibly cold in afternoon with falling afternoon temperatures and 1 at 6pm. Ice storms ar 22F and repeated bitter cold shots
1982 epic back to back Cold Sundays.
1977 for that 35 day period, I think we hit 43 one day and then constant teens and 20’s for highs.
Some other great ones in 78 and 79 and this century also but those stand out to me.