I have been gardening most of my life in St. Paul Minnesota. Sure were are having a super warm and early spring but starting a garden now is risky. Twenty years ago the common wisdom was to put the plants out and plant the warm weather crops at the end of May.
For me the date for planting has crept up to about mid May, and I have noticed that even though I live in zone 4 some zone 5 plants are surviving the winter. I have a lavender plant growing close to the house that is now three years old as it has survived the winters even though it is a zone 5 plant.
Even though it is warm out it may still be too soon to plant the vegetable garden because the soil is not warm yet. Seeds may survive but they won’t thrive and we could still have several hard frosts.