Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

To set the record straight: the actual weather does not set the snow line in FS04 or FSX. There is a season file that does this. You can make it snow in Hawaii in July and ground textures will not turn white. You can make it 75 degrees in Duluth in January and the ground textures will not turn green. So please don't link snow lines and weather programs together.
Thanks,
Hi Dain,
Please understand I wasn't reacting to you, but to the poster above you who is misinformed!! I have no problems with what you posted at all. I should have made myself clearer in my post!!
Peace!