Wedding Theme

I have a beautiful camp site in which I plan to use as my wedding site as well. However, I would love to have a winter wedding theme (it is both mine and my fiance`s favorite season). The problem is using this site in real winter would be impossible...way too cold and hard to get to for my guests. Is it silly to have a summer wedding with a winter theme? I`d love to put a winter backdrop up and have winter wonderland decorations, but still have the season to be summer so that my guests can get to my location okay and not be freezing! Any Ideas or am I just nuts?