Thanks I'm on the 41st parallel and have mature girls from seed.
I was gonna wait till after 4/20.
But now I'm second guessing putting them out today.
If weather permits, I'd say do it.
If you intend to plant them in the ground, I'd wait until soil temperatures reach 55 degrees. Until then, a black pot is a warm spot to hang out until the ground warms.
I guess I should mention "hardening off" plants grown indoors.
In my own case, I use large CFLs and have never had an issue with moving young plants into direct sunlight.
If your plants are under small CFLs or old style florescent tubes, there's a chance that direct sunlight will bleach the existing sun leaves. They become paper thin and die.
The best way to acclimate the young plants is to put them in a spot that gets direct sunlight only in the morning, and/or evening, until the plant has added a couple more sets of leaves.
The new leaves won't have bleaching problems, and will support the plant while it adds further growth.
The original, indoor produced leaves will probably still bleach out and die, once exposed to direct noon sunlight, but now the loss won't be catastrophic.