Philly's high of 98 did not set a record but it did equal the hottest we've been all summer...and is our third day this month where the temperature exceeded 96 or higher. It also wasn't anywhere near the hottest temperature in the US -- many places bested Philadelphia's 98 degree mark. St. Louis, at 105, was one of the hottest in the US today and set a record last reached in 1911. Other records were reached from Wisconsin to Tennessee, east to Georgetown, DE (which hit 100 in the Delmarva this afternoon).
For the Corn Belt (Illinois, Indiana), tomorrow is the last hot day. Missouri will have to wait until Sunday for some relief. For us, Saturday will be our hottest day and yes, 100 is possible. We'll bring up the "ugh" factor of Saturday's potential triple digit heat tomorrow morning.