We have had over a hundred degrees this whole week and even with the air conditioning it is too hot by late morning to sew in my room upstairs. I do go up while it is somewhat cool, but that is all. I also have had a problem with my hand/arm and been wearing a brace, so that doesn't help either.
I know how you feel. When it is too hot who can stand to sew? I am thinking of trying to sew downstairs, but, I hate to clean up every time I quit for the day. So, I am not so sure that is the answer.
Come on fall!