A novel maize variety designated PHWHE and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PHWHE with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PHWHE through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PHWHE or a trait conversion of PHWHE with another maize variety. Inbred maize varieties derived from maize variety PHWHE, methods for producing other inbred maize varieties derived from maize variety PHWHE and the inbred maize varieties and their parts derived by the use of those methods.