Rafael Castillo experiences mild winters, with temperatures ranging from -3°C in June and July to 6°C in April. Springs are warm, with highs reaching up to 36°C in January and October. Summers are hot, with temperatures often exceeding 30°C, peaking at 40°C in December. Autumns see a slight drop in temperature, but still remain relatively mild, with highs of up to 26°C in September. The coldest months of the year, June and July, have average temperatures around 11°C.