Forecasting Commodity Prices

The Federal Reserve Bank of New York looks at various methods (h/t Mark Thoma):

Over the last decade, unprecedented spikes and drops in commodity prices have been a recurrent source of concern to both policymakers and the general public. Given all the recent attention, have economists and analysts made any progress in their ability to predict movements in commodity prices? In this post, we find there is no easy answer. We consider different strategies to forecast near-term commodity price inflation, but find that no particular approach is systematically more accurate and robust. Additionally, the results warn against interpreting current forecasts of commodity prices upswings as reliable and dependable signals of future inflationary pressure.

I'd say good luck with that.