BOS's 4 AM heat index was 80 degrees. [I know, Southerners will laugh.]
— Andrew Loconto (@AndrewLoconto) August 7, 2022
For the week Aug 5 to Aug 12 dating to 1943, BOS has only seen a heat index of 80 or more degrees at 4 AM about 2.5% of all obs. Pretty uncommon: pic.twitter.com/CMSobTIgG4