Yup Cincinnati, just up the hill from the Ohio River. We are a bit protected here in the Ohio River Valley. Dayton, one hour north is always significantly colder and windier.
It's usually around mid March when I plant seeds for cold weather crops like spinach, swiss chard, lettuce and put out the broccoli and cabbage I have already growing under lights right now. We still do get some frosts after that, but all that cold weather stuff survives it.