What does the phrase mean ''march comes in like a lion and out like a lamb?

The phrase "March comes in like a lion and out like a lamb" refers to the typical weather patterns of March in many regions. It suggests that the month often begins with harsh, winter-like conditions (the "lion") and gradually transitions to milder, more pleasant weather by the end of the month (the "lamb"). This saying highlights the variability of spring weather and the eventual arrival of warmer temperatures.