"40%-60% humidity doesn't happen east of the short grass prairie in the US during the summer."
BBBBBBBBBBBBBBBBBWWWWWWWWWWWWWWWWWHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA!
Having lived in Washington, DC, metro for the past 30 years I can definitively tell you that it is a GLORIOUSLY REFRESHING summer day if the humidity drops below 60% goddamned percent.
Most of the time around here in the summer the humidity is so thick that it's easier to breath at the bottom of a swimming pool.
The average... AVERAGE relative humidity in July in DC is 67%, and a significant portion of the time it is well in excess of that at the hottest part of the day.
In the days before air conditioning many European nations considered a diplomatic posting to DC to be a tropical posting because summers were so brutal here.