Almost hit 90 today. My "greenhouse"(it's actually a loft with south facing windows and skylights) ladies are loving it. To address the original question, harvest time is strain dependent. I have a Purple Maroc that I will be harvesting this weekend, but my other strains (OG Kush, Jilly Bean, Blue OG, Jesus OG) won't be ready until mid to late October. Because of the long summer days we get here in the PNW, some strains (mostly equatorial sativas) start flowering way too late, and never fully develop. I tried Uptown Girl (Thai x Burmese) last year, and it was a total failure. The Purple Maroc is a very early flowering strain, it starts mid-July at this latitude. Most of the strains that are popular here start flowering between mid-August and mid-September and finish by early November at the latest.