they like cooler temps, as long as it is not a hard freeze. Also a snow now and again does not hurt them. You can find them easy in the snow if they are big enough.
Hey, we have found a lot of shrooms and they are in patches. Usually if you find one there's about 50 more in that area. We're from Henry County IL and we found five pounds the first day and three pounds the second day we went. Just keep lookin.