Re: sure is hot in here
Here is a link to a study in 1926 of internal hive brood area temperature vs outside temperature.
The hourly chart (page 186) show outside temperatures over a 24 hr period varied from 68° F to 108° F, while the temperature in the brood area varied from 92.8° F to 94.1° F. The test hive was in the shade. The experiment was at Ohio State University, Columbus, Ohio.
And the excerpt starts on page 181, so you don't have to wade thru hundreds of pages to see the chart.
USDA Zone 7a - elevation 1400 ft