I like these weather vane programs. But I hate to say this is that neither version has the direction arrow pointing in the right direction. With winds the direction is were the wind is blowing from  so Walt’s modification has the arrow 180 deg out. This is an easy mistake to make as common sense would say direction is were it is going ...

Description:This program gets data from the nearest weather station, and uses wind speed and direction data to construct a vector of the wind. It is of course only as accurate as the data it collects.  The length is calculated by the wind speed times 20.I wanted the program to save the zip code, so that every time the program is run, the ...