Nate writes well of interesting things, but that meteorologists are calibrated is not new news: the 2001 anthology Principles of Forecasting includes it many times, and they're one of the standard examples of an area in which it is possible to build up genuine expertise because of repeated objective feedback.
Nate Silver of the New York Times's political prediction blog fivethirtyeight has posted an excerpt of his upcoming book on predictions in various disciplines, The Signal and the Noise. The excerpt describes how meteorologists, in contrast to prognosticators in other domains, have substantially improved the accuracy of their predictions by understanding the limitations of both intuition and computer models, enabling them to combine them intelligently rather than relying excessively on one or the other.
The excerpt is available at http://www.nytimes.com/2012/09/09/magazine/the-weatherman-is-not-a-moron.html?_r=2&pagewanted=all, and a summary is available at http://fivethirtyeight.blogs.nytimes.com/2012/09/09/why-weather-forecasters-are-role-models/
Side note: if you are running up against NYT's 10 article per month limit, opening the links in Incognito Mode will get around it.