The present invention relates to a method for predicting a trend of a meteorological phenomenon on the basis of data originating from a meteorological radar. The method includes at least the following steps: a first step of extracting gray level skeletons from images representing the data of the radar; a second step of associating characteristic data indicative of the state of the meteorological system with the gray level local extrema points; a third step of pairing each gray level skeleton of the two successive images; a fourth step of predicting future positions of the forms of the images; a fifth step of predicting trend data of the meteorological system; and a sixth step of representing the information originating from the sixth tracking step. The invention can notably be applied to the establishment of a prediction of trend of a cloud mass. The prediction of the trend of a meteorological situation may be presented to a pilot of an aircraft.