I learned about this years ago on a Montana mountain elk hunt. Having ridden for days in every weather but a cyclone I finally asked my grizzled old mountain-man guide "what do you think the weather will be tomorrow?"
His reply: "Boy, if I could tell the weather, don't you think I'd get me a town job telling folks the weather... instead of wrangling dudes around IN the weather?" "Instead of pondering about what the weather WILL do, just pack for anything it COULD do!"
You know.... he looked like I imagine Cris Kavanaugh might look like.