Rating Newest Oldest. Best Answer: Typically it means when the weather is going to do/or has done something bad, for example, lots of snow, very very cold, flood warnings, too much heat and no air conditioning etc. The dictionary definition of Inclement is severe, rough, harsh or stormy, when referring to weather. When not referring to weather it means not kind of merciful. Source(s): Experience. Our inclement weather days, are snow days.