March comes in like a lion, and goes out like a lamb

March comes in like a lion, and goes out like a lamb,

 and In like a lion, out like a lamb.
Prov. The month of March usually starts with cold, unpleasant weather, but ends mild and pleasant. (Either part of the proverb can be used alone.) March certainly is coming in like a lion this year; there's been a snowstorm every day this week. Jill: Today is March twenty-fifth, and it's beautiful and warm outside, when just two weeks ago, everything was covered with ice. Jane: In like a lion and out like a lamb, all right.
See also: and, come, goes, lamb, like, march, out