I will defend Sanders here. I doubt he remember breakfast let alone historic temperature records.
But here is a site that does, and it does appear a few records were set but saying no one remembers???? BS.
NYC record 66 2015 note record for the 29th 70 1984
Washington DC 72 1964
Boston 65 1889
Pittsburgh record 62 2015 note: record for the 29th is 62 2003
Atlanta record 76 2015
Dallas record 73 2015 note: record for the 29th is 73 1999
San Fransico 68 1967
Fargo 47 1999
Chicago 64 1984
Saint Louis 71 1889