A CU field had developed by late afternoon, which probably prevented that extra 1 degree bump.
Today's record might be more attainable which is 108*F in 2018.
As an aside, as hot as this Summer's been, we have yet to see a 110*F+ high and have only tied one record high in Met Summer (103*F on 6/11). Part of it is that those records from 1980 are just insanely high, but still...
The real story has been the string of record maximum lows.