During the few days, eastern Kansas has faced a stretch of muggy weather. Just what is meant by “Muggy”? Muggy is defined by the Merriam-Webster dictionary as “unpleasantly warm and humid”. When was the term first used? The first known use was in 1728. The term is thought to derive from the Old Norse work “mug” referring to drizzle. During muggy weather, the humidity is so high it can feel like you are in a steam bath, with water ready to form on any surface. After the pleasantly cool weather in May, the last week certainly fit the description of “unpleasantly warm and humid”!
Mary Knapp, Weather Data Library