It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that a man complained to the Prophet (peace and blessings be upon him) that the livestock had perished and the families had become emaciated and weak. Sayyiduna Anas bin Malik (may Allah be pleased with him) said: Then he (peace and blessings be upon him) supplicated to Allah, and they were given rain. He did not mention the turning of the cloak, nor facing the qiblah.
Imam Bukhari (may Allah have mercy on him) narrated it in his Sahih from al-Hasan bin Bishr. Together with the previously mentioned hadith of Sayyiduna Abdullah bin Zayd (may Allah be pleased with him), it serves as an indication that this (turning the cloak and facing the qiblah) is a sunnah only in the sermon of the rain prayer, not in the Friday sermon. And Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة الاستسقاء / 6433