to grow cold; to get chilly; to cool down
to get (very) cold; to get (much) colder
to become completely chilled
夜になると冷えてきます。
It gets cold when it becomes night.
体が冷えないように注意します。
I'm careful not to let my body get cold.
よく冷えたビールが美味しいです。
Well-chilled beer is delicious.