They look like gray treefrogs to me, but I can't imagine they would've been layed and developed this much already, even with the warm weather. From Monroe county, Indiana.

tadpole by Zach Truelock, on Flickr


Tadpole by Zach Truelock, on Flickr

"Habitat" I saw a cricket frog here also, and I'm told its somewhat permanent.

Roadside Ditch by Zach Truelock, on Flickr