Definition & Meaning of "as the day lengthens, so the cold strengthens"in English

What is the origin of the proverb "as the day lengthens, so the cold strengthens" and when to use it?

The origin of the proverb "as the day lengthens, so the cold strengthens" is based on observations of weather patterns, reflecting the idea that as the days get longer toward the end of winter, the weather can become even colder and more severe. It suggests that the increasing length of daylight does not necessarily signal warmer weather immediately, and in fact, colder temperatures may persist or intensify during the transition to spring. This saying serves as a reminder to prepare for the continued harshness of winter, even as the days gradually lengthen. It highlights the unpredictability of seasonal shifts, advising caution and readiness for more challenging weather.