Tulips need a period of winter chill to bloom, so unless you've stored them somewhere cold I think it's probably too late. I'm not sure what would happen if you chilled them now in the fridge and then planted them--maybe someone else has tried that and would know.
I would skip the chilling this late in the season. Do a fair to middling job planting them and hope for some blooms that are diminished in size but still attractive. Don't space them too far apart. You want a massed effect.
I planted tulips and daffodils in March in northern Ohio. My husband had bought them dirt cheap in the winter and we left them in the garage. I put the tulips in some planter boxes because they were mixed and I didn't want to commit. The tulips bloomed mid-May. The daffodils worked out great. We also had hyacinths forgotten in the basement and planted those in March. Popped up beautifully.