Just an update after I originally started the topic. I asked because my friend had too many plants and knew she was going to run out of room before fall in her outdoor area.
All her plants were put out from inside middle of May and within a few weeks all were showing popcorn buds. Figured two sativas would be slow to bud anyway, so she took them into the garage every night at sundown, then put them back out every morning at 8:30. They were ready by mid July, had very dense buds and sticky as shit, and top notch quality.
So it works great, and seems the more direct summer sun and heat really helps bud and thc production