GribView

GribView - Free software to access GFS data files.
GRIBview is theyr's stand-alone software application that enables you to request, download and view high quality weather forecast data, with six-day forecasts in 3 or 6-hour time steps.

GRIBview provides you with the ability to zoom in without any loss of resolution, to switch between any downloaded parameters, and to select a meteogram for any selected point.