On this date in 1931, the average afternoon temperature around the US was 89 degrees, almost 60% of the US was over 90 degrees and more than one third was over 95 degrees. Every state except five were over 90 degrees, and fifteen states were over 100 degrees. The hottest temperature was 109 degrees at Forestburg, South Dakota, which was 42 degrees warmer than today.
via Real Climate Science
September 11, 2020 at 04:01PM