I guess it depends on how local you want your produce to be, but I did a search for you and found ProducePete.com. Here the What's in season page:http://www.producepete.com/whatsin.html
For more local information you may need to search deeper. It's fairly easy to find info about California but I'm not as sure about your region. I was just so excited to get the first strawberries (California grown) of the season at Whole Foods yesterday. Seemed amazingly early, but they tasted great.