Epicurious has an interactive map that can show you what is in season in your part of the country. http://www.epicurious.com/articlesguides/seasonalcooking/farmtotable/seasonalingredientmap

You should see blood oranges as well as chanterelle mushrooms very soon. The California olive harvest is just beginning.

In season are potatoes, cranberries, squash, citrus, apples, pears to name some