Temps have been in the upper 80's, sometimes 90, with some variation. I have the theory the heat may be project related or if not the step within the project. My backs are always off. I took my vacuum which has a powerful reverse blower and blew it directly onto the card. Dust inside the fan would be blown off. That lowered the temp by only two degrees. Today temps are much lower: 80 and 82 degrees. Of course it's a cool day here in New York so more observation is required.
I notice ArVee you are now 317th in the world. That is really good ... a different kind of heat.