Electrical load controllers and methods for controlling conduction of electrical power to loads are provided that include determination of a baseline value based on a dynamic collection of past value(s), determination of a threshold humidity value as a function of a baseline humidity value and a second humidity value greater than the baseline humidity value and/or based on a received ambient light value, and/or determination of whether to transition a switching circuit to an ON state based on a current humidity value, other sensed environmental condition, baseline humidity value, and/or a threshold value.