The famine would not break out because of drought, but there would be famine despite heavy rainfall as nothing would grow from the earth.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لَيْسَتِ السَّنَةُ بِأَنْ لاَ تُمْطَرُوا وَلَكِنِ السَّنَةُ أَنْ تُمْطَرُوا وَتُمْطَرُوا وَلاَ تُنْبِتُ الأَرْضُ شَيْئًا