I seldom even look at the weather channel. When I step out the back door of my house, I know NSEW and can feel it. Kinda redneck, but I have a 4 inch piece of wire on my Radio antenna at a 90 degree angle on my truck, hanging off it is a piece of unwaxed dental floss about 8 inches long. When I pull up to where I'm hunting, it takes a simple glance to know what the wind is doing at that location and if I need to enter from another side. Landscape has a lot to do with how the wind is acting in a small area. As for telling several days in advanced......they cant get it right if its gonna rain tomorrow biggest part of the time.