Workshop? Freezing cold these days. Air-conditioning running, cold air seeks the basement.
However, yesterday we had our annual "Canada Day" steamup – setting up a portable track, running, then tearing down said track. I think the temperature was something like 36 in the shade, with a "humidex" reading of 47.
Of course, 6 months from now, it'll be -36, with a "windchill" reading of -47.
If you are thinking "why do they do this, are they crazy?", don't worry – we are having the same thoughts. 
JohnS.