めっきり春らしくなった。

remarkably

spring; springtime; New Year; prime (of one's life, etc.); adolescence; puberty; sexuality

seeming ... (expresses judgment based on evidence, reason or trustworthy hearsay); appearing ...; -ish; like a ...; typical of ...; appropriate for ...; becoming of ...; worthy of the name ...

to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...