If your neighbors don't mind, start at 8am. I usually wait till 9am but if I have to do something else from 9am on I'll start at 8am.
Pattern continues. We'll see rather warm (no blowtorch) Sat/Sun then bam, storms/showers 70s Mon and 70s Tuesday. After that, no heat wave in the foreseeable future...
79F/DP 65F