It’s hard to believe that we could see mid 90s for highs this weekend, but possibly have only low 80s for highs and even 50s for lows by the mid part of next week.
However, it fits a pattern we have been in this summer, where a heat wave high pressure in the upper atmosphere is occasionally interrupted by a cool trough of low pressure in the jet stream that digs unusually far south.
It happened 4th of July Weekend, so it makes it believable that the pattern could bring another shot of relief from the July heat and humidity.
By the way, the record lows for next Wednesday morning is 57° set way back in 1886, and Thursday morning is 56° set in 1945. I would not be surprised if we reach or break either or both of those records!
For weather geeks, both the GFS and ECMWF models have shown this upper trough/surface front the last two days, but suddenly the last few runs have deepened the trough to look like a cool down similar to the 4th of July Weekend.