#4 Pray during rain

Book of Call to Prayers (Adhaan)

(40) Chapter: It is permissible to pray at one's dwelling during rain or if there is a genuine excuse

Hadith 666

Narrated Nafi`:

Once on a very cold and stormy night, Ibn `Umar pronounced the Adhan for the prayer and then said, "Pray in your homes." He (Ibn `Umar) added. "On very cold and rainy nights Allah's Messenger (صلى الله عليه وسلم) used to order the Mu'adh-dhin to say, 'Pray in your homes.' "