Mild and pleasant (5)
I believe the answer is:
balmy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mild and pleasant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for balmy that I've seen before include "Mild and pleasant" , "Of weather, mild and clement" , "Warm, summery" , "(Of weather) pleasantly warm" , "Pleasantly mild" .)