It may be possible, with a lot of work, to get the model up and running, but to get any type of accuracy out of the model, realtime data assimilation of observa

It may be possible, with a lot of work, to get the model up and running, but to get any type of accuracy out of the model, realtime data assimilation of observations is key and that is possibly even more complex. So I'll agree with the comment that it may be easier to just hook into a national weather service API. Of course, if you just want to learn about getting these models up and running then it's worth trying. (I work at a national met service developing these models.)