"Those are enchanted windows. Magical Maintenance decide what weather we'll get every day. We had two months of hurricanes last time they were angling for a pay rise ... "
-- Arthur Weasley (OP7)
Magical Maintenance decides the type of weather visible outside the enchanted windows of the Ministry Headquarters (OP7). Reg Cattermole worked for Magical Maintenance (DH13) as did Dolores Umbridge‘s father, Orford Umbridge (Pm).