The tempered portable wash unit generally includes a container having an interior for selectively receiving and retaining a select quantity of fluid. A dispenser may be coupled with the container and be in fluid communication with the fluid retaining interior, the dispenser being actuable between a first closed position restricting outflow of fluid from the container and a second open position permitting dispensing fluid from the container. A heat trace cable may couple with the container and be positioned therewith for generating variable heat along its length thereof in response to changes in localized temperatures to generally maintain the temperature of the fluid within the container within a desired threshold temperature comprising a range of 60° F. to 100° F. in ambient atmospheric temperatures as low as −30° Fahrenheit (“F”) and in compliance with an ANSI Class 1 Div. 1 classification.
