A fact I found interesting

Climatology...
by the way, today is the only calendar date for the entire year,
that the temperature has never reached 60 degrees in philadelphia(59
degree-1990)in its entire official weather recorded history. This fact
was pointed out to US by Tom l. Cbs3, thanks! Ben Franklin would be
proud!

This is from the National Weather Services weather discussion. It's not worth linking to because the page changes every few hours, but I think it's a credible fact.