Dear Brandon: First, please tell me kindly where to find reliable 100-hour weather predictions you have referred to.
Second, I am ignorant enough to think that most climate models – at least those modeling the Atlantic Multidecadal Oscillation – are in fact attempting to forecast weather on a very large time scale. A highly ambitious task; in addition to a meteorological situation, you also have to model seasons, glaciers thawing, sea currents changing, and so on. If we can not reliably model even the meteorological component, why should I take the big model seriously?