Over the past century, August 5th afternoon temperatures have declined sharply in the US. They peaked in 1930 at 93 degrees, with last year about ten degrees cooler.
The years 1918, 1930 and 1934 were extremely hot on August 5th. with Nebraska reaching 115 degrees on August 5th, 1934. On August 5th, 1918 there were 110 degree temperatures in Nebraska, Missouri and Illinois.
August 5th temperatures over 105 degrees used to be very common in Nebraska, but they almost never happen any more.
Iowa hasn’t had a 100 degree temperature reading on August 5th in over 70 years.
via The Deplorable Climate Science Blog
August 5, 2018 at 09:10AM
Iowa Climate Science Education 