I live in East Contra Costa County and it was 106 last week. That's too hot to do anything! I grew up in Stockton and remember the days before we got A/C and all of the drapes were drawn before noon. I do that in my house now to keep the utility bill down. We also use fans but I have to be careful when I'm laying out pieces. I once lost a great layout for a scrap quilt when I got up from my chair. I didn't realize that I was blocking the pieces from my oscillating fan. It oscillated the heck out of my layout! Now I keep my phone with me and before I get up I take a photo of what I'm working on....just in case!