 2 if the clouds are black then this is a sign of rain. in the hadith in which the messenger of god may god bless him and grant him peace was asked about the clouds he said
٢ وإذا كان السحاب أسود، فذلك من علامات الغيث. وفى الحديث الذى سأل رسول الله صلى الله عليه وسلم عن السحاب، فقال