His father held a D.Sc. in biology from the University of Erlangen-Nuremberg and taught evolutionary biology; while growing up Dembski was neither particularly religious nor did he question the theory of evolution.
Ayahnya menyandang gelar D.Sc. dalam bidang biologi dari University of Erlangen-Nuremberg dan mengajarkan biologi evolusionari; ketika bertumbuh Dembski tidaklah sangat beragama maupun mempertanyakan teori evolusi.