his paper presents the data mining activity that was employed to mining weather data. The self-organizing data mining
approach employed is the enhanced Group Method of Data Handling (e-GMDH). The weather data used for the DM
research include daily temperature, daily pressure and monthly rainfall. Experimental results indicate that the proposed
approach is useful for data mining technique for forecasting weather data. The results of e-GMDH were compared to
those of PNN and its variant, e-PNN. The reason in these particular cases is unclear as e-GMDH generally outperforms
PNN and its variant in most modeling and prediction problems. This paper has shown that end-users of data mining
should endeavor to follow the methodology for DM since suspicious data points or outliers in a vast amount of data could
give unrealistic results which may affect knowledge inference. Inclusion of the graphical network is a good visual
instrument that would assist end-users to track how the e-GMDH advances in the search space. Empirical results also
show that there are various advantages and disadvantages for the different techniques considered. There is little reason to
expect that one can find a uniformly best learning algorithm for optimization of the performance for different weather
datasets. This is in accordance with the no free lunch theorem, which explains that for any algorithm, any elevated
performance over one class of problems is exactly paid for in performance over another class [28]. The dataset for the
average monthly rainfall used in this research is available for researchers to experiment with, using various self-organizing data mining techniques. Further work will include a graphical user interface (GUI) which is partly in place but
needs to be updated to include the current functionalities. Plans are in place for a partnership arrangement between the
Fiji Meteorological Service and University of the South Pacific with regards to the free exchange of weather data for
academic purposes and weather and climate monitoring purposes