In this chapter, we've seen an interesting practical use case for the application of neural networks. Weather forecasting has always been a rich research field, and indeed neural networks are widely used for this purpose. In this chapter, the reader also learned how to prepare similar experiments for prediction problems. The correct application of techniques for data selection and preprocessing can save a lot of time while designing neural networks for prediction. This chapter also served as a foundation for the next ones, since all of them will focus on practical cases; thus, the concepts learned herein will be explored widely in the rest of the book.