Antonyms for the phrase "hot spell" include cold, freezing, frosty, chilly, and cool. While a hot spell represents a prolonged period of unusually high temperatures, its opposite, a cold spell or cold snap, refers to a prolonged period of below-average temperatures. In climates that experience extreme temperatures, a cold spell can be just as debilitating as a hot spell, causing difficulties for human health, agriculture, and infrastructure. However, during the summer months, a cold front can be a welcome relief from the heat, providing a fresh, cool breeze that allows people to enjoy outdoor activities without being overwhelmed by the sun's intensity.