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

What does "as the day lengthens, so the cold strengthens" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

as the day lengthens, so the cold strengthens

US /æz ðə deɪ ˈlɛŋθənz, soʊ ðə koʊld ˈstrɛŋθənz/
UK /æz ðə deɪ ˈlɛŋθənz, səʊ ðə kəʊld ˈstrɛŋθənz/
"as the day lengthens, so the cold strengthens" picture

Idiom

a proverb meaning that as the days get longer after the winter solstice, the weather often becomes colder

Example:
It's already February and freezing; as the day lengthens, so the cold strengthens.
Don't pack away your winter coat yet; remember, as the day lengthens, so the cold strengthens.