I do know, but its been years since I really even believe them at all, usually if I want to know what the weather is going to be I look up, rain hits my face, theres a good chance its gonna rain, pretty simple huh?
If its cold, theres a good chance its winter, which means it might snow, be cold, rain, or any number of other winter stuff.
If its hot outside, its a good sign that its summer, either that or my pants are on fire.