Gimme That Old Time Weather Prediction

The Old Timer scratched his head, took a long think and said, "From the looks o' the spida webs theya's gonna be rain!"

"Rain," you think, "How do spider webs tell the weather?"

"Yep," he continues as he faces eastinto a rising wind and pointing to the south,"She'll be commin' from theya!"

"No way the storm is coming from the south!" you say,"Certainly its coming from the direction of the wind.  The wind is blowing it this way."

In short order, the Old Timer is proved correct with rain coming from the south.

Many old techniques of weather prediction have been dismissed as superstitious ignoring thier effectiveness.  Any scientific model must have the ability to predict.  If the old methods can predict the weather with a high degree of accuracy, might there be solid science behind them?  Let's see. . .