It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Drought does not mean that there is no rain; drought means that there is rain but nothing grows from the earth."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الاستسقاء / 6480