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Persistent risks of extreme weather events including droughts and floods due to climate change require precise and timely rainfall forecasting. Yet, the naturally occurring non-stationarity entrenched within the rainfall time series lowers the model performances and is an ongoing research endeavour for practicing hydrologists and drought-risk evaluators. In this paper, an attempt is made to resolve the non-stationarity challenges faced by rainfall forecasting models via a complete ensemble empirical mode decomposition (CEEMD) combined with Random Forest (RF) and Kernel Ridge Regression (KRR) algorithms in designing a hybrid CEEMD-RF-KRR model in forecasting rainfall at Gilgit, Muzaffarabad, and Parachinar in Pakistan at monthly time scale. The rainfall time-series data are simultaneously factorized into respective intrinsic mode functions (IMFs) and a residual element using CEEMD. Once the significant …