I'm in zone 8b. Was just warm enough today to bathe the dogs.

My tomatoes come out each day to soak up the sun, then get put in the greenhouse overnight to protect from the chill. I'll be doing the same with the other starts that I'm working on hardening. I generally plant tomatoes and basil at the start of May, so still a few weeks to go.
I seed peas outside quite early, and I mean in between snow storms early.

This year they went in Jan 23rd. Last year they got buried in a foot of snow after I planted them and about 50% still sprouted once things thawed out. I really like to get them going as soon as possible since pea greens are one of my favorites.