Would be interesting to run a dewpoint analysis in the US and regionally that covers that same timeframe, though I'm not sure the data for that goes so far back.

The Saturday stuff should be fairly organized as the pretty vigorous vort max swings in.

A really interesting statistic for the entire USA which exactly mirrors the data I share here from the philly burbs of Chester County. This below analysis measures not the typical metric of 90+ days but unusual hot periods of at least 4 days on average across the entire country where the average temperature reaches a level based on historical records that would be expected to only occur once every 10 years. Look how much hotter the entire nation was back in 1930's and 1940's compared to today! No matter how much we hear about how hot it is today we have still not reached that peak heating from the 1930 through 1942 period which matches the hottest period here in Chester County PA.

Yeah, that's looking like more of a diurnal cold core shower setup on Saturday. Some convection potential. Good odds for some downpours but it'll be hit/miss.

I've seen a noticeable bias on the Euro to overdo precip. Might be a regional thing