1989 - Forty-seven cities between the Rockies and the Appalachians reported record low temperatures for the date. Lows of 38 degrees at Abilene TX, 34 degrees at Jackson KY, and 36 degrees at Midland TX established records for the month of September. The low of 36 degrees at Midland smashed their previous record for the date by thirteen degrees. Fayetteville AR and Springfield MO reported their earliest freeze of record. Thunderstorms produced torrential rains in northeastern Florida. Jacksonville was deluged with 11.40 inches of rain, and flash flooding resulted in two deaths. (The National Weather Summary) (Storm Data)
I always wondered what caused 1989-1990 to be as extreme as it was, from extreme cold and widespread severe weather and Thanksgiving snow and December arctic cold to record warmth January thru March.
What I remember the most though is how early all the fall foliage dropped from the trees thanks to the early extreme cold and very windy weather. ALL the leaves were off the trees here before Halloween! That has not happened before nor since.
EWR: 92 (2017)
NYC: 91 (2017)
LGA: 91 (2017)
JFK 92 (2017)
Clean sweep for 2017 and everyone was within one degree of each other, that must be VERY rare (I wonder if there's ever been an instance of the same record high temperature at all 4 locations at the same time?)